What Does “ISTG” Stand For? “ISTG” is an acronym that stands for “I Swear to God. In summary, ISTG is an acronym widely used in informal online communication. Origin of ISTG. "ISTG" stands for "I swear to God," an acronym usually used to express the seriousness of a situation or assure you're. “I swear to God” is a common phrase that people use to show that they are telling the truth or to express their sincerity. 4. '. ETA meaning: estimated time of arrival. The term is primarily used to emphasize a point you’re making and can reiterate anger or annoyance. ISTG can be used to express extreme seriousness, anger, or surprise, and is usually used outside of serious religious contexts. I just won the jackpot on the lottery ticket I bought yesterday, ISTFG! 5. "I swear to. Further Reading: What Does NFS Mean: Here Is All-inclusive Information You Need to Know. OFC meaning: of course. It’s also like STG. However, as with many other abbreviations meaning "I love you," it should not. This phrase should only be used in casual conversation. ISTG Meaning= Expression of Disbelief4. This abbreviation is typically used to express surprise, confusion, disbelief, or. What Does ISTG Mean? In internet chatting and text messaging, the acronym “istg” actually means the phrase “I swear to God. While it may seem like a phrase that you would use in casual conversation, it can be so much more than that. ”. ISTG stands for “I swear to God” and is often used on Snapchat to emphasize a point or express strong emotion. ISTFG. It could be used to show how excited they are or to express. In texting lingo, “istg” simply stands for “I Swear To God”. Specifically, as internet usage is increasing daily,. Its meaning is “I Swear To God,” and it is commonly used to add sincerity or emphasis to a statement. Summary: · The added I at the beginning just refers to the person that is saying this, so ISTG means “I Swear To God”. This phrase has a couple of variants, S2G and ISTG, and is frequently used in texting or on social media. ABC – This doesn’t stand for anything. TikTok lingo is hard to keep up with. ”. This initialism should be avoided in professional situations or in conversing with someone who is religious. FYP means For You Page. "ISTG" stands for "I swear to God," an acronym usually used to express the seriousness of a situation or assure you're. It can be written in both lowercase “istg” and capital “ISTG” letters. Pushin P is a popular phrase in the Bay Area and Texas that was popularized by Atlanta rapper Gunna. In conclusion, “ISTG” is an acronym that stands for “I swear to God. It comes from the courtroom oath that traditionally said, “i swear by almighty god that the evidence i shall give shall be the truth, the whole truth, and nothing but the truth. I Swear to God. ISTG Meaning What Does “ISTG” Stand For? If you’ve ever seen “ISTG” in a text message or on social media, you might be wondering what it means. This is only for close friends. ”. What Does “ISTG” Stand For? “ISTG” is an acronym that stands for “I Swear to God. "I swear to God" isn't just texting slang – it's used in everyday conversations to emphasize the truth at hand. More violent then just I Swear To GodISTG is an acronym that is short for “I swear to God”. It is an expression used to emphasize the truthfulness or sincerity of a statement. This is a group of teachers that are more than friends. ISTG is used to express frustration or annoyance at something or to show emphasis on a statement. For example, they might say “ISTG this homework sucks. It’s also like STG. Abbreviation of I Swear To Mother Fucking God. This abbreviation is commonly used in informal conversations on various digital platforms, such as text messages, social media posts, and online forums. ” It is often used to emphasise the truthfulness of a statement or convey the seriousness of a situation. 2. The term comes from “shipping” within fandom culture. It can also be used as an expression of sincerity, such as when a user is making a promise or expressing their. ”. ISTFG. It is commonly used as an exclamation or interjection. STG: You can swear to god when you are frustrated or in exacerbation. Here's what this versatile slang term means and how you can use it in your messages and social media posts. This phrase can be used to swear truthfully without having to use a more serious swear word, such as the word "God". The phrase originated as a method for people to express a greater level of certainty about a statement they’re making in a conversation. Some of these words and acronyms are used on other video games and social media platforms too. Use ISTG to show you’re not joking about something, or to express annoyance or frustration with something (or someone). What does B) mean? Back when emojis weren’t a thing, ‘emoticons’ were used to add more emotions to the text. Pinky promise. Alternatively, you might say ISTG to show exasperation or frustration at something someone is telling you. new search. Looking for online definition of ISTG or what ISTG stands for? ISTG is listed in the World's most authoritative dictionary of abbreviations and acronyms ISTG - What does ISTG stand for?Definition of the term. Do you know what ISTG means in a text message? Watch this video to find out when to use ISTG in a text message and what it means!What Does “ISTG” Stand For? “ISTG” is an acronym that stands for “I Swear to God. I swear to fucking god. HMU meaning: hit me up. I swear to fucking god. It is commonly used in text messaging to express the seriousness of a situation or to assure that a statement is not a joke. Matching search results: Since the STG meaning is often expressed fully when in a verbal conversation, the term STG should only be used in casual conversations via text or on. The origin of ‘ISTG’ can be traced back to the phrase “I swear to God,” which. It is very similar to ISTFG meaning, however, there are additional letters added within the acronym. This abbreviation is commonly used in informal conversations on various digital platforms, such as text messages,. It is very similar to ISTFG meaning, however, there are additional letters added within the acronym. Get all the news you need in your inbox each morning. It is used to emphasize a statement, a promise, or a claim, to express frustration, or to make a solemn vow. Complaint Of Patient Data C. By swearing to God, you make a sacred oath that most people respect more and therefore, are more. Simply put,. ’. It can be used to convey sincerity, make promises, express annoyance, and more. It could be used to define the frustration or annoyance you might have towards something or somebody. The abbreviation ISTG is widely used in text messaging and online chat with the meaning "I Swear To God. This is also very similar to. ISTG Meaning. It can be a powerful tool for self-motivation and encouragement. It can be used to convey extreme seriousness, exasperation, or surprise, and is usually used outside of a serious religious context. HMU meaning: hit. Essentially, ISTG is a shortcut way of saying "I. ISTG has multiple definitions that can be used in various settings. Overall, the acronym STG stands for “swear to God. ISTG is simply an acronym that means I swear to God. What does 'ISTG' mean? "ISTG" stands for "I swear to God," an acronym usually used to express the seriousness. What Does ISTG Mean In Texting? ISTG is an acronym used for “I Swear To God. This initialism should be avoided in professional situations or in conversing with someone who is religious. The slang abbreviation ISTG is frequently used as an interjection to express emotion or as an attestation of honesty. Avoid using this abbreviation in business or professional settings because it is so casual. The phrase “I swear to God” has been used for hundreds of years and is basically taken from the Old English word “swear” which means an oath. ISTG. – What does istg Mean in Text – ISTG is a popular online abbreviation among today’s youth. It is a stronger version of the phrase “I swear”. " ISTG is used to add emphasis to a statement (usually a promise, threat, excuse or apology), or as an interjection which expresses surprise, skepticism or exasperation (similar to OMG ("Oh My God!") ). The media could not be loaded, either because the server or network failed or because the format is not supported. ISTFG. It is typically used to show appreciation of an act of kindness by a loved one. ISTG Meaning= Honesty or Certainty2. Whenever a TikTok user opens their app, they are directed to their For You Page, which is a stream of videos that TikTok thinks that user will like. ” Origin of ISTG. The phrase “so what” is often used to express indifference or dismissiveness about the topic at hand. ISTFG means “I Swear To Fing God,” a phrase used to emphasize sincerity or seriousness when making a statement. What does Istg mean in text message . It’s often used as an exclamation or a way to emphasize something and can be written in lower or upper case letters. It can often. Likewise, if you have ever seen the text code "ISTG" in texting and wondered what does ISTG mean in text. The ISTG acronym is commonly used in response to a person who doubts something that you said. ISTG is an acronym that stands for “I Swear To God”. ISTG can be used in various contexts and can have different implications depending on the conversation. -ISTG that was the best pizza ever! -I put your racket back in your duffle bag istg. Page ContentsWhat Is ISTG Meaning1. Start the day smarter. Here's what "ISTG" means and how you can use it in your next text exchange. It’s a widely used acronym in text messaging and online chatting on social networking sites. One such popular slang on platforms like Snapchat is ‘ISTG’. Meaning. I swear to God. Start the day smarter. How Is ISTG Used? Use Cases & Examples. 查看翻译. It can be used to convey extreme seriousness, exasperation, or surprise, and is usually used outside of a serious religious. ISTG is an acronym used in texting, which stands for “I swear to God. new search. I’m beyond shocked. It represents an empathetic or mildly shocked response to unexpected news or events. I Swear to God. ILYSM means "I Love You So Much. ISTG is simply an acronym that means I swear to God. Also, Check What Does SNM Mean In Texting? What Does ISTG Mean and How Is It Used in Real Context? The use of shortened phrases is a popular way to communicate in text messages and online conversations. Get all the news you need in your inbox each morning. Istfg Meaning Is: Istfg stands for “I Swear to Fucking God. Definition of ISTG in Slang/Internet Slang. It’s an acronym that people use to express the seriousness of a situation or to emphasize that they are not joking. It’s used to convey a deep sense of seriousness about a situation or to emphasize a point being made. The Meaning of ISTG in Text. What does 'ISTG' mean? "ISTG" stands for "I swear to God," an acronym usually used to express the seriousness of a situation or assure you're not joking when sharing a surprising fact. In summary, ISTG is an acronym widely used in informal online communication. The abbreviation ISTG is widely used in text messaging and online chat with the meaning "I Swear To God. Confused about slang like cap, HB, ATP, and more? We defined some popular TikTok acronyms for you. Like, "ISTG, if I get one more. More violent then just I Swear To God Learn what ISTG means in this quick and easy guide! Find out what the abbreviation stands for and how to use it in real life with this simple explanation. " It is an internet acronym used in online chat to express frustration, surprise, or vehement assertion. Person1: I'm so exhausted. It is often used in informal conversations, especially when expressing frustration or disbelief. showing only Slang/Internet Slang definitions ( show all 7 definitions) Note: We have 1 other definition for ISTG in our Acronym Attic. This is also very similar to. showing only Slang/Internet Slang definitions ( show all 7 definitions) Note: We have 1 other definition for ISTG in our Acronym Attic. The abbreviation “ISTG” is a shorthand. ISTFG, I can’t believe she actually said that to me. It is used to express frustration, anger, or disbelief. Throughout the years, a variety of terms have arisen which make it easier to communicate online. "Meaning; ISTG: I Swear to God: ISTG: Immigrant Ships Transcribers Guild: ISTG: Information Storage Technology Group (University of Twente; Netherlands) ISTG: Inter-Site Topology Generator: ISTG: Implicit State Transition Graph: ISTG: Integrated Systems Tech Group (Tampa, FL) ISTG: Innovative Science and Technology Group (est. When someone doubts something you said, using ISTG is a way to make a solemn oath that most people respect and are more likely to believe. ISTG is an internet slang initialism that conveys earnestness, annoyance, or surprise. Meaning. It can be used to express emotions, surprise, or sudden kind of feelings. ” Origin of ISTG. What Does ISTG Mean In Texting? Snapchat represents a real-time multimedia communication platform that takes a step beyond traditional messaging applications. ISTG stands for "I Swear to God. ”. But while the slang term ISTG is harmless, other teenage slang terms could indicate that your teen is talking about risky behaviors or communicating with potentially dangerous people. Here’s our round-up of the latest Roblox slang. One of the main uses of ISTG is in text messages or chats, either between friends or in a. Even though the phrase includes “God,” its meaning and uses aren’t considered religious. This is a casual phrase that many people use both online and in real life (imagine someone exclaiming “I swear to God!” when they’re frustrated or emphasizing a point). ” How to understand Texting Abbreviations!! LOL and LMAO, SMH, FFS… and all the other ISTG Meaning A short video summarzing the most common. Prison gang. Its meaning is “I Swear To God,” and it is commonly used to add sincerity or emphasis to a statement. It's used express emotional sincerity or to seem intimidating. Guarantee. Today, I'll walk you through what ISTG means in text and other text. The acronym ISTG is commonly used in text. What does LFG ð mean? LFG as “let’s freaking go” has since become widespread in texts among friends as a way to excite or “hype up” one another about a particular event or situation. What does ISTG mean in the text? Ans. STFG stands for Super Teacher Friends Group. It is a reference to swearing or commitment to God that is not something to take lightly as it is a risk that the person who is saying it could be punished in the event of lying. The “baby” part of the phrase isn’t a literal reference to a child, and. STFU is an acronym that means "shut the fuck up. ISTG=Make a PromiseWhat Is ISTG Meaning in SlangIstg Slang Usage (Examples and Use Cases)ISTG Meaning on TikTokISTG Meaning SnapchatFAQs on ISTG Meaning1. ”. Gunna explained that the ‘P’ stands for ‘player,’ although it can also stand for. Capitalization The slang term and abbreviation “ISTG” is typically spelled in ALL CAPS or all lowercase letters. What does 'ISTG' mean? "ISTG" stands for "I swear to God," an acronym usually used to express the seriousness of a situation or assure you're not joking when sharing a surprising fact. Likewise, if you have ever seen the text code "ISTG" in texting and wondered what does ISTG mean in text. It's not typically used in a religious context. ISTG stands for “I swear to God. suggest new definition. ISTG stands for: I Swear To God. It stands for “I swear to God. It can be used as an exclamation, where users are expressing disbelief or shock. This should not be used in any formal setting, no matter how informal it may seem, via social media or text. Expand Your Lexicon: Discover 5+ Similar Words for ISTFG When it comes to texting, understanding similar. This is a common acronym that is used online, typically in text-based communication. A. “ISTG” stands for “I swear to God,” and it’s commonly used in texting to express the seriousness of a situation or to assure someone that you’re not joking when. Simply put, “ISTG” stands for “ I swear to God . . "I swear to. ISTG Meaning. What does 'ISTG' mean? "ISTG" stands for "I swear to God," an acronym usually used to express the seriousness of a situation or assure you're not joking when sharing a surprising fact. The phrase was later. STG means different things to different people but its most common meaning is ‘Swear To God’. Annoyance and Assurance Another ISTG How to Use ISTG One of the hottest internet acronyms among today's teenagers is ISTG. Here’s what this multifaceted slang term means and how you may. This expression is used to emphasize the truthfulness or seriousness of a statement. ”. -ISTG that was the best pizza ever! -I put your racket back in your duffle bag istg. ISTG stands for I Swear To God. What does GM mean in text from a guy?What does df mean in texting? In the realm of texting and digital messaging, “df” usually stands for “da fuq”, a slang and casual form of saying “the fuck”. It’s a direct and sometimes blunt way of communicating that the information just shared doesn’t impress, affect, or matter to the person asking “so what. "I swear to. " The abbreviation ILYSM is used with the meaning "I Love You So Much" as an expression of affection. ” This abbreviation is commonly used in informal conversations on various digital. Today, I'll walk you through what ISTG means in text. There needs to be a TikTok user manual that includes a glossary because new abbreviations and slang words are constantly being churned out and I, a millennial, cannot keep up. Matching search results: Since the STG meaning is often expressed fully when in a verbal conversation, the term STG should only be used in casual conversations via text or on social media. What does ISTG mean? ISTG means “I Swear To God”. A very dramatic phrase to be used only in exceptional circumstances. What does ISTFG mean? This page is about the various possible meanings of the acronym, abbreviation, shorthand or slang term: ISTFG. " “ISTG” meaning over text message. For example: What does ISTG mean? ISTG is an acronym that means I swear to God. ISTG stands for “I swear to God” in texts and on social media apps. This. Further Reading: What Does NFS Mean: Here Is All-inclusive Information You Need to Know. The expression “I swear to God” is used for centuries and originates directly from the Old English word “swear” which means swearing. Definition of ISTG in Slang/Internet Slang. ISTG Meaning. This acronym often highlights the sincerity, seriousness, or exasperation of the person using it. ILYSM can be used to express profound affection. What Does ISTG Mean? Introduction. FOMO meaning: the fear of missing out. Chronic Obstructive Pulmonary Disease D. It may sound like a new term to some, but this one is very familiar to social media users. Well, fret not – I’m here to help unravel the mystery for you. This expression is most likely something you've heard in ordinary conversation. What Does ISTG Mean in Texts or on Social Media? ISTG means “I swear to God” in text messages and on social media platforms like TikTok, Snapchat, Twitter, Instagram, and more. ONB is an abbreviation commonly used in texting, which stands for “Oh No Baby”. ISTG and OMG can also be used interchangeably often. ISTG Meaning= Threat3. B) used to be the symbol of a person wearing sunglasses with a smile on his face. While some text codes (like brb, lol, and omg) are simple ones that parents can understand, it can be difficult for parents to understand many codes teenagers use nowadays. Use ISTG to show you’re not joking about something, or to express annoyance or frustration with something (or someone). Usually, students or the young generation use this acronym. ETA meaning: estimated time of arrival. In contrast to standard text or audio messaging apps, Snapchat offers the unique ability to share fleeting live video messages that vanish as soon as they are. What does STG mean?U Jelly is often used to goad someone online or in-person because you possess an article that they do not have, or because you have attained some kind of gamer achievement or minor online fame. If you see someone using ISTG when texting, they’re probably emphasizing how serious they are about something. ” It is commonly used in text messaging and online chat to emphasize the truth or sincerity of a statement. 3. Specifically, as internet usage is increasing daily, people. ”. It's a close relative of the OMG (Oh My God). It is used to emphasize a statement, a promise, or a claim, to express frustration, or to make a solemn vow. LFG meaning: let's freaking go. What Does Istg Mean? The acronym ISTG stands for “I swear to God. TLDR meaning: too long; didn't read. Since this is a very casual acronym, avoid using it in. IMO meaning: in my opinion. Chronic Osteomyelitis Pathology Degree Embed Share an image of ISTFG » Click to view: Hearing impaired tip:. You’ll find it all over the internet, from social media platforms like twitter and instagram to direct messages between friends. -ISTG that was the best pizza ever! -I put your racket back in your duffle bag istg. ISTG is an acronym that stands for ‘I Swear To God. It is an acronym used to emphasize a belief in or commitment to the truth of a statement. Every TikTok user's FYP. ISTG is short for "I swear to God. So, if you ever heard OMG (O My God), another popular acronym, ISTG won’t surprise you anymore. The ISTG definition includes a short acronym for a phrase that reads as ‘I Swear To God’. What does OTP mean in texting? “OTP” means “one true pair/pairing,” according to Merriam-Webster. You will find information about the origin and other possible meanings in all types of information on this acronym, including its. It is commonly. " ISTG is used to add emphasis to a statement (usually a promise, threat,. OFC meaning: of course. For example, three sample text messages using the abbreviation ISTFG could be: 1. On the internet, there’s a lot of jargon and abbreviations that often confuse even the most seasoned internet user. ISTG. What does istg mean in text. In simple terms, “istg” stands for “I swear to God,” a popular expression used to emphasize the truthfulness or intensity of a statement. The texting term ISTG, which means "I Swear To God," tells people that you really do mean what you're saying. What does 'ISTG' mean? "ISTG" stands for "I swear to God," an acronym usually used to express the seriousness of a situation or assure you're not joking when sharing a surprising fact. ”. ”. 2006)Texting with friends is the best way to use this term. It’s similar to the term ‘ONG. The slang abbreviation ISTG is frequently used as an interjection to express emotion or as an attestation of honesty. ISTG is commonly used in text messages and other social media conversations as a way to emphasize the truth or sincerity of a statement. -ISTG that was the best pizza ever! -I put your racket back in your duffle bag istg. This can be seen in phrases like: “ISTG, I’m always here for you” or “ISTG, I’ll never forget what you did for me”. ISTFG. ISTG means I swear to God. ISTG Meaning= Threat Use Cases & Examples. U Jelly has become a very popular expression, and because of its viral spreading nature, it has achieved meme status. It can also be an expression of surprise or. ISTG is an acronym used for “I Swear To God. You might learn your child is using this slang term by chance when a text pops up on the phone screen. Usually, students or the young generation use this acronym. IYKYK meaning: if you know, you know. Jamie Grill / Getty. ” Definition: Istfg is an acronym for “I swear to f Up. Use Cases & Examples. ISTG is a slang abbreviation used in online messaging and texting that means 'I swear to God. OTP meaning: one true pairing (a couple that fans prefer to all other. The”I” is the person who is saying it, while”F” is an expletive “F” can be an exclamation point added to the expression. suggest new definition. 1 definitions of ISTG. ” Kids often use this to express frustration or exasperation. While some text codes (like brb, lol, and omg) are simple ones that parents can understand, it can be difficult for parents to understand many codes teenagers use nowadays. So, if you ever heard OMG (O My God), another popular acronym, ISTG won’t surprise you anymore. . What Does Istg Mean In Text? I swear to God ISTG means “I swear to God. Promise. Clear Of Patient Diagnosis B. ATP meaning: answer the phone. Read Also: What does CFS mean on Instagram? Common Uses for ISTG . ”. While the presence of the word “God” might indicate some religious connotation, it’s not a religious term at all. ”. ISTFG means “I Swear To Fing God” and is typically used in informal texting to express frustration or disbelief. "I swear to. The slang abbreviation ISTG is frequently used as an interjection to express emotion or as an attestation of honesty. Usually used after saying something ‘cool’. Correct: ISTG Correct: istg Incorrect: iSTG Usage Use of the abbreviation can be found in the following places. By using “ISTG,” individuals can emphasize the sincerity or truthfulness of their statements, especially when sharing surprising facts or. ISTJ types like to have clear goals and realistic deadlines, and to work with factual data to solve problems and monitor progress. Key Takeaways: ‘ISTG’ stands for “I Swear To God” and is commonly used in text messages and online chat. In a different context, “sw” can also mean “someone who. One of the known acronyms is “ISTG” or “istg”. ISTG is an acronym that is short for “I swear to God”. Usage: “Oh nice, you finally finished it! Welcome to the club B)” What does BB mean?What Does ISTG Mean in Texts or on Social Media? ISTG means “I swear to God” in text messages and on social media platforms like TikTok, Snapchat, Twitter, Instagram, and more. Social media platforms: Snapchat, Instagram, Twitter, TikTok, and more. Having a parental control app on your child’s phone will give you. What does 'ISTG' mean? "ISTG" stands for "I swear to God," an acronym usually used to express the seriousness of a situation or assure you're not joking when sharing a surprising fact. What Does ISTG Mean? ISTG is an acronym that stands for “I Swear to God”. For example, if someone decides to message you with insulting comments about your hair, then you might reply with "STFU. TLDR meaning: too long; didn't read. While the presence of the word “God” might indicate some religious connotation, it’s not a religious term at all. ISTG is often used in informal conversations, texting, and on social media platforms. The slang abbreviation ISTG is frequently used as an interjection to express emotion or as an attestation of honesty. They prefer to work in traditional organisational environments, with people who take their. ISTG is an abbreviation commonly used in text messaging and online communication, particularly among younger generations. The”I” is the person who is saying it, while”F” is an expletive “F” can be an exclamation point added to the expression. IYKYK meaning: if you know, you know. This initialism should be avoided in professional situations or in conversing with someone who is religious. This initialism should be avoided in professional situations or in conversing with someone who is religious. I swear to f**king god (ISTFG) is an abbreviation used to express exasperation, disbelief, or agreement. What does 'ISTG' mean? "ISTG" stands for "I swear to God," an acronym usually used to express the seriousness of a situation or assure you're not joking when sharing a surprising fact. 2. Let’s talk about the other meanings of this common abbreviation and find out what it means for different people in different contexts. They are there for each other on the good days and the bad days. This phrase is used to emphasize the truth of a statement or assertion. So, the next time you see someone using “istg” in a message or post, you’ll know exactly what they mean. GTFO can be used to express disbelief or displeasure. As in, I swear that actually happened. When used in text conversations, ISTG retains its original meaning of “I swear to God. It can be used to express emotions, surprise, or sudden kind of feelings. ISTG is an acronym that means I swear to God. " People use it in various places on the internet to tell someone to stop talking or as a gut reaction to something offensive or mean-spirited. ISTG meaning is “I Swear To God” and is one of the most widely used acronyms in the English language. 1 definitions of ISTG. The phrase “I swear to God” has been used for hundreds of years and is basically taken from the Old English word “swear” which means an oath. It is commonly employed in informal chats, videos, and posts to show seriousness and truthfulness. What Does ISTG Mean? In internet chatting and text messaging, the acronym “istg” actually means the phrase “I swear to God. You can use it to show your deep frustration, attest to the truth of something, or underline your beliefs. ”. It is a commonly used slang expression used to emphasize that someone is telling the truth, or to add emphasis to a statement. Swear to fucking god. ABC means asking another player (or telling another player you’re ready) to make an offer, trade or perform a task in Roblox, such as roleplaying in a game. Use Cases & Examples. Summary: · The added I at the beginning just refers to the person that is saying this, so ISTG means “I Swear To God”. Testify. This phrase is often used to express frustration or exasperation with a situation or to emphasize the sincerity of a statement. ISTG Unveiled: Introduction to the Slang. Sub the Gamer security threat group. Similar to “I Swear To Fucking God” istfg, in that it is an escalation of the original term “I Swear To God” istg. ISTG Meaning= ThreatUse Cases & Examples. This phrase is often used on social media while making public posts or in private chats. Going deeper into its meaning, ISTG sounds quite similar to OMG ‘Oh My God!’. When someone uses ISTG, they are essentially emphasizing. This phrase is typically employed to express surprise, disbelief or concern over a given situation. ISTFG, if you don’t stop playing your music so loudly, I’m going to lose it.