If you have seen people asking “what is the fourth hole?” on TikTok, you are probably wondering whether it refers to a real part of the body or just another internet joke. The phrase has become a confusing piece of online slang because different posts use it in different ways.
The important point is that “the fourth hole” is not a medical term. On social media, it is generally used as an adult joke, meme, or deliberately vague reference involving anatomy. Some posts connect it with the urethral opening, while other versions reference an old Family Guy joke or simply leave the meaning open to interpretation.
The phrase became especially interesting because people started debating what “all four holes” was supposed to mean. That confusion helped the expression spread through memes, comments, reaction videos, and TikTok discussions.
This guide explains what the fourth hole means, where the meme came from, why people mention it on TikTok, and which interpretations are actually accurate.
Quick Answer: What Is the Fourth Hole?
“The fourth hole” is internet slang rather than a real anatomical term. On TikTok and other social platforms, it is usually used as a crude or humorous reference to female anatomy, with some users using the phrase to point to the urethral opening. However, the expression has no single official definition, and some versions are simply jokes or references to the Family Guy gag.
What Does “The Fourth Hole” Mean on TikTok?
The meaning depends heavily on the context.
When someone says “the fourth hole” in a TikTok comment or video, they are usually referring to an internet meme involving the idea that women supposedly have a mysterious “fourth” opening.
Some creators use the phrase when talking about the urethral opening, which is separate from the vaginal opening. Others use it as a deliberately vague sexual joke without identifying a specific body part.
That distinction matters.
The phrase does not describe an officially recognized anatomical structure. The urethral opening is a normal part of female anatomy, but calling it a “fourth hole” is an informal internet framing rather than medical terminology.
In simple terms:
| Phrase | What it usually means |
|---|---|
| Fourth hole | Internet slang or a meme |
| Fourth hole on TikTok | Usually an anatomy-related joke or sexual innuendo |
| Urethral opening | The opening through which urine leaves the body |
| All 4 holes | A vulgar expression whose exact meaning depends on context |
| Medical fourth hole | Not a recognized anatomical term |
So, if you searched “what is the fourth hole” because you saw it on TikTok, the safest answer is: it is slang, not a medical name.
Is the Fourth Hole Actually the Urethra?
This is where many online explanations become misleading.
The urethral opening is a real anatomical opening. It is separate from the vaginal opening and is involved in the passage of urine.
However, the phrase “fourth hole” does not medically mean urethra.
Some internet users count body openings in a particular way and then label the urethral opening as the “fourth.” That is part of the joke or slang explanation. It should not be confused with an official anatomical classification.
The better way to describe it is:
The urethral opening is real; “the fourth hole” is the slang label people sometimes give it online.
This distinction makes the explanation much more accurate than simply saying, “The fourth hole is the urethra.”
Why Is It Called the “Fourth” Hole?
The number is part of the joke.
Online discussions often involve people counting openings and asking what qualifies as the mysterious “fourth.” Because the phrase is vague, people respond with different answers, creating confusion and encouraging others to search for an explanation.
That uncertainty is actually one reason the meme works so well.
A person might see a comment such as:
“She does all four.”
Someone who has never heard the expression may immediately ask:
“Wait, what is the fourth hole?”
That question then becomes part of the joke.
Rather than having one universally accepted definition, the expression developed as a piece of internet humor where ambiguity creates curiosity.
The Real Anatomy Behind the Joke
Understanding the anatomy makes the slang easier to understand.
Female external anatomy includes several distinct structures and openings. The urethral opening is where urine exits the body, while the vaginal opening is the entrance to the vagina. The anus is a separate opening.
The vulva is the broader term for the external genital structures; the vagina refers specifically to the internal muscular canal.
This is important because social-media memes frequently simplify anatomy for comedic effect.
A few facts to remember:
- The urethral opening is real.
- The vaginal opening is separate from the urethral opening.
- The anus is a separate opening.
- The clitoris is an organ, not a hole.
- “Fourth hole” is not standard medical terminology.
Therefore, a TikTok explaining the phrase may contain a genuine anatomy fact while still using an inaccurate slang label.
Where Did the Fourth Hole Meme Come From?
The modern internet meme has a more complicated history than many TikTok explainers suggest.
A documented viral moment occurred on September 19, 2023, when an X user posted a joke referring to “a girl who does all 4 holes.” The wording immediately confused other users, who began asking what the supposed fourth hole was. The resulting replies and memes helped turn the phrase into a broader internet joke.
But the concept itself is older.
The phrase also has a notable connection to Family Guy, where the character Glenn Quagmire jokes about women having a “fourth hole.” The gag deliberately treats the supposed opening as something bizarre and impossible, making it clear that the joke is not intended as a genuine anatomy lesson.
This gives the phrase two useful pieces of history:
Older pop-culture joke → later internet meme → TikTok discussions and variations
That is much more reliable than claiming that a particular TikTok creator invented the expression.
Did TikTok Invent the Fourth Hole Slang?
No.
Although TikTok helped expose the phrase to a large audience, the documented modern meme history predates its TikTok popularity.
The September 2023 X post is one of the clearest documented points in the modern meme’s spread. Know Your Meme also traces the older Family Guy connection.
This is an important distinction because slang can become popular on TikTok without actually originating there.
A phrase can move through several platforms:
TV → X → memes → TikTok → Instagram/Reels → comments
By the time most people encounter it, the original context may already be lost.
Why Did “What Is the Fourth Hole?” Become So Popular?
The phrase has several characteristics that make it perfect for social media.
1. It creates instant curiosity
The wording makes people feel like they missed some secret piece of information.
2. It sounds like a factual question
Someone asking “What is the fourth hole?” can sound genuinely confused, even when the phrase is being used as a joke.
3. The answer is controversial
Different people give different explanations, which naturally produces more comments.
4. It works well in short videos
TikTok creators can turn the question into a reaction, explanation, prank, or meme within seconds.
5. Confusion drives engagement
People often comment simply because they want to know what the phrase means.
That creates a cycle:
Someone sees the phrase → gets confused → searches for it → comments → others see the discussion → the phrase spreads.
How Is “Fourth Hole” Used on TikTok?
You may encounter the phrase in several different formats.
Anatomy Explainers
Some creators use it while discussing basic anatomy and the difference between the urethral and vaginal openings.
Reaction Videos
A creator may react dramatically to someone asking about the “fourth hole,” especially if the audience is expected to understand the joke.
Comment Sections
Sometimes the phrase appears without explanation because everyone involved already understands the meme.
Meme Videos
Creators may intentionally give absurd answers instead of a factual one.
Bait-and-Switch Humor
A video may make viewers expect an explicit explanation before revealing that the “fourth hole” is actually a joke or pop-culture reference.
This is one reason you should not assume that every TikTok using the phrase means exactly the same thing.
“Fourth Hole” vs. “All 4 Holes”
These phrases are related but are not necessarily identical.
“Fourth hole” usually focuses on the mysterious or supposedly extra opening.
“All 4 holes” is generally more sexually suggestive and can refer to a broader joke about using multiple bodily openings. Current internet explainers note that the phrase has no universally accepted anatomical definition.
So if someone says:
“What does the fourth hole mean?”
they may be asking about the meme itself.
If they say:
“What does all 4 holes mean?”
they are more likely referring to the sexualized version of the meme.
The surrounding caption, comments, and video determine the intended meaning.
Other Meanings You May See Online
One reason the phrase causes so much confusion is that people have created alternative interpretations.
The Urethral Opening
This is one of the most common anatomy-related explanations found in current online discussions.
The Family Guy Joke
Some people are referring specifically to the fictional “fourth hole” from the Family Guy gag. In that joke, the supposed location is deliberately absurd.
A Deliberately Vague Sexual Reference
Some users do not mean a particular anatomical structure at all. They simply use “fourth hole” as suggestive internet slang.
An Absurd Meme Answer
Other posts intentionally give ridiculous answers because the confusion itself is the joke.
This is why copying one definition and presenting it as the only meaning can make an article inaccurate.
Common Misconceptions About the Fourth Hole
Myth 1: It is a real medical term
It isn’t. Medical anatomy does not use “fourth hole” as the name of a body part.
Myth 2: The clitoris is the fourth hole
No. The clitoris is an anatomical organ, not an opening.
Myth 3: Every TikTok uses the phrase the same way
Not at all. Context can change the joke.
Myth 4: TikTok created the phrase
The documented modern meme history goes back to X in 2023, while an older Family Guy joke also exists.
Myth 5: The phrase has one official definition
It doesn’t. It is slang and meme language, so different communities can use it differently.
Why Are There So Many Conflicting Answers?
Internet slang rarely develops like a dictionary entry.
A traditional word normally has an established definition. A meme phrase can work differently. Someone creates a joke, another person changes it, someone else makes a parody, and eventually thousands of people repeat it without knowing where it started.
That appears to have happened with “fourth hole.”
Some users connect it to anatomy. Others connect it to Family Guy. Others use it as general sexual humor. Once the phrase reached TikTok, creators could adapt it to their own style.
As a result, searching for one “official” answer can be misleading.
Is “Fourth Hole” Appropriate for Normal Conversation?
It depends on the setting, but it is generally best treated as informal and potentially vulgar internet slang.
It can be understood among friends who are familiar with the meme, but it would not be appropriate terminology for:
- Professional communication
- School assignments
- Medical discussions
- Formal writing
- Workplace conversations
- Educational material intended for precise anatomy
If you are discussing anatomy, use the actual anatomical terms instead.
Why Does TikTok Use Slang Like This?
TikTok encourages short, memorable expressions.
A phrase that is confusing, surprising, or slightly controversial can generate more reactions than a straightforward explanation. Users then build videos around questions such as:
- “Did you know about the fourth hole?”
- “What is the fourth hole?”
- “I just found out what the fourth hole means.”
- “Everyone is explaining the fourth hole differently.”
The format naturally encourages comments because viewers want to compare answers.
This is a broader pattern in social-media language: confusion itself can become part of the content.
What Should You Say If Someone Asks “What Is the Fourth Hole?”
A simple and accurate answer would be:
“It’s internet slang, not a medical term. Some people use it as a joke about the urethral opening, while other versions refer to the older ‘Family Guy’ gag or simply use the phrase as sexual humor.”
That answer avoids treating an internet meme as medical terminology while still explaining why people use it.
Is the Fourth Hole a TikTok Feature or Trend?
No.
There is no official TikTok feature, button, setting, challenge, or tool called the Fourth Hole.
It is simply a phrase that appears in user-generated content, memes, comments, and discussions.
If you saw “fourth hole” in a TikTok caption, it is referring to slang or a meme rather than something built into TikTok.
What Does “Fourth Hole” Mean in Family Guy?
The Family Guy reference is important because it is one of the earliest well-documented pop-culture explanations associated with the phrase.
In Season 5, Episode 18, “Meet the Quagmires,” Glenn Quagmire jokes that women have a fourth hole. The punchline intentionally presents the supposed location as an absurd discovery rather than a real anatomical fact.
That reference later became useful internet-meme material because people could reuse the phrase without needing to explain the original scene.
Why You Shouldn’t Treat TikTok Anatomy as Medical Advice
TikTok is excellent for discovering trends, but viral videos are not automatically reliable educational sources.
When a creator says something like “women have four holes,” it is important to distinguish between:
A real anatomical structure and a slang expression describing it.
The urethral opening is real. The phrase “fourth hole” is not a medical classification.
That distinction prevents a meme from being mistaken for anatomy.
Fourth Hole Meaning: Simple Breakdown
If you only need the answer quickly, remember these points:
- Fourth hole is internet slang.
- It is commonly associated with an anatomy-related joke.
- Some users use it to refer to the urethral opening.
- It is not an official anatomical term.
- The phrase also has an older Family Guy connection.
- A viral 2023 X post helped fuel the modern meme cycle.
- TikTok later helped spread and remix the phrase.
- “All 4 holes” can have a more explicitly sexual meaning.
- Context is essential because there is no single universal definition.
Frequently Asked Questions
What is the fourth hole?
The “fourth hole” is an informal internet slang phrase. Some users use it as a joke referring to the urethral opening, while other versions are connected to the Family Guy gag or general sexual humor.
Is the fourth hole real?
The phrase itself is not a medical term. The anatomical opening that some people associate with it—the urethral opening—is real, but calling it a “fourth hole” is slang.
What does the fourth hole mean on TikTok?
On TikTok, it is usually an anatomy-related meme or sexual joke. The exact meaning depends on the video, caption, and comments.
Did the fourth hole originate on TikTok?
No. The documented modern meme gained attention following an X post from September 19, 2023. The concept also has an older connection to Family Guy.
Is the fourth hole the urethra?
Some online users use the phrase that way, but “fourth hole” is not the medical name for the urethral opening.
Is the fourth hole the clitoris?
No. The clitoris is an organ, not an opening.
What does “all 4 holes” mean?
It is vulgar internet slang connected to the fourth-hole meme. It generally has a sexual meaning, but the exact interpretation can vary depending on the context.
Why do people keep asking what the fourth hole is?
The phrase is intentionally confusing. Its ambiguity makes people curious, encourages comments, and gives creators an easy subject for reaction and meme content.
Is “fourth hole” appropriate in formal writing?
No. If you are discussing anatomy, use precise anatomical terminology rather than internet slang.
Final Takeaway
So, what is the fourth hole?
The simplest answer is that it is internet slang and meme language, not a medical term. On TikTok, some people use it as a humorous reference to the urethral opening, while others are referencing the older Family Guy joke or using the phrase as deliberately vague sexual humor.
The modern meme became widely discussed after a September 2023 X post sparked questions about “all 4 holes,” while the phrase itself has an older pop-culture connection.
That is why you may find different answers online. There is no official “fourth hole” definition. When you see the phrase on TikTok, look at the surrounding video and comments to understand which version of the joke the creator intends.
Zoe Collins is a creative writer and naming specialist with a passion for discovering unique and meaningful names. At Nameznest, she focuses on curating fresh ideas for pet names, gaming usernames, and creative naming inspiration.
With a strong eye for trends and creativity, Zoe makes it easy for readers to find the perfect name for any purpose. Her goal is to turn name searching into a fun, simple, and inspiring experience for everyone.
