“The 4th hole” is crude internet slang, not a medical or anatomical term. In the meme’s most common interpretation, it refers to the urethral opening—the small opening through which urine leaves the body. But the phrase is intentionally vague and is sometimes used as shock humor, so it does not have one fixed meaning on TikTok.
The short answer
The viral “4th hole” phrase is a sexualized internet joke about the separate openings in female anatomy. Most explainers interpret the alleged “fourth” opening as the urethral opening, which is separate from the vaginal opening. The phrase is not a term used in medical anatomy, and claims that women have a medically recognized “fourth genital hole” are misleading.
Depending on the post or comment, people may also use the phrase to refer jokingly to the mouth, the anus, the clitoris, or an entirely fictional “extra hole.” Those uses are context-dependent rather than established definitions.
What the anatomy actually is
Using accurate terms makes the meme easier to understand:
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- Urethral opening: the external opening of the urethra, the tube that carries urine from the bladder out of the body.
- Vaginal opening: the entrance to the vagina, a canal inside the body.
- Anus: the separate opening at the back of the body through which stool leaves.
- Vulva: the external genital area, including structures such as the labia, clitoris, urethral opening, and vaginal opening.
- Clitoris: an erectile sensory organ associated with sexual pleasure. It is not an opening or a “hole.”
The urethral opening is generally located in front of the vaginal opening. It is small and can be less familiar to people who have not learned detailed vulvar anatomy, which helps explain why it became the punchline of the meme. It is not secret, newly discovered, or an additional organ created by the trend.
Vulva and vagina are not interchangeable
Online discussions often use “vagina” to describe the entire external genital area, but that is anatomically imprecise. The vagina is the internal canal and its opening; the vulva is the external genital anatomy around it. The urethral opening is part of the external anatomy but is not the vaginal opening.
Why is it called the “fourth” hole?
The joke usually counts familiar openings—often the mouth, vaginal opening, and anus—and then presents the urethral opening as a surprising “fourth.” That framing is not a proper anatomical classification. The mouth is not part of the vulvar or genital anatomy, and the urethral opening is not an extra opening in the way the meme suggests.
In other versions, “fourth hole” is simply deliberately nonsensical sexual humor. Some posts use the phrase to provoke confusion rather than to communicate a precise anatomical claim. That is why two TikTok videos may appear to define the expression differently.
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| What the meme may say | What is accurate |
|---|---|
| “The fourth hole” | Informal slang with no medical definition |
| The urethra is an extra or newly discovered opening | The urethral opening is a normal, separate anatomical opening |
| The clitoris is a hole | The clitoris is an organ, not an opening |
| The vagina and vulva are the same thing | The vagina is an internal canal; the vulva is the external genital area |
Where did the meme come from?
The documented trail begins with a post on X, formerly Twitter, dated September 19, 2023. The post said, “Cheating on a girl who does all 4 holes is just greedy.” The wording prompted confusion and jokes about what a “fourth hole” could mean. Replies, quote-posts, and memes then carried the phrase to other platforms, including TikTok.
The exact first TikTok upload—or the first creator to use the phrase on TikTok—has not been reliably established. Later explainers disagree about whether the expression refers to the urethra, anus, clitoris, or something else. That disagreement is important: TikTok usage is not a consistent dictionary definition, and a post’s surrounding caption or comments may change the intended joke.
Is “the 4th hole” a real medical term?
No. Medical professionals do not use “the fourth hole” as a standard anatomical term. The phrase belongs to internet slang and shock humor.
A medically accurate explanation is that the urethral opening is separate from the vaginal opening, while the anus is a separate opening farther back. Whether someone chooses to count the mouth, anus, or any other opening is part of the joke’s framing—not a recognized system for classifying female anatomy.
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Does the phrase mean the same thing in every TikTok?
No. The urethral opening is the strongest common interpretation of the viral meme, but the expression is used inconsistently. Some creators use it as a bait-and-switch joke; others use it to refer to a different body part or to an imaginary opening. You need to read the individual video, caption, and comments to determine what a particular creator intended.
For that reason, a responsible explanation should say “the phrase commonly refers to the urethral opening” rather than “the fourth hole is definitely the urethra.”
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Is it sexual-health advice?
No. A meme about anatomy should not be treated as guidance about sexual behavior. The phrase can be degrading because it reduces women to body parts or to sexual access, and it is often used for provocation rather than education.
Anyone seeking information about anatomy, sexual activity, pain, injury, urinary symptoms, or infection should use a qualified medical or sexual-health source instead of relying on TikTok slang. In particular, the meme should not be read as implying that sexual activity involving the urethral opening is ordinary, safe, or medically recommended.
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How to explain the phrase accurately
- Start by calling it crude internet slang, not anatomy terminology.
- Identify the common interpretation: the urethral opening.
- Explain that the urethral opening and vaginal opening are separate.
- Clarify that the clitoris is an organ, not a hole.
- Note that TikTok uses the phrase inconsistently and that some versions are deliberately nonsensical.
- Keep the meme separate from medical or sexual-health advice.
Frequently Asked Questions
What does “4th hole” usually mean on TikTok?
It usually refers to the urethral opening, the separate opening through which urine leaves the body. The phrase is slang and may be used differently in individual videos.
Do women have a medically recognized fourth genital opening?
No. “The fourth hole” is not a medical term. The meme commonly points to the normal urethral opening, but it does not represent an additional or newly discovered genital opening.
Is the clitoris the fourth hole?
No. The clitoris is an erectile sensory organ, not an opening.
When did the fourth-hole meme start?
The documented meme trail begins with an X post dated September 19, 2023. It later spread through replies, memes, and posts on platforms including TikTok. The first TikTok upload has not been reliably established.
Why do different people explain the phrase differently?
The expression is shock humor rather than standardized slang. Some users mean the urethral opening, while others use it to refer jokingly to another body part or to an imaginary extra opening.
The Bottom Line
Bottom line: “The 4th hole” is a crude, ambiguous meme—not a medical term. Its common interpretation is the urethral opening, which is separate from the vaginal opening. TikTok usage varies, so the phrase should be explained as sexualized internet humor rather than as a precise anatomical fact or sexual-health instruction.
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