The 7 Shocking Meanings Of 'The 4th Hole' Slang: The Viral Term Explained (2024 Update)
The phrase "The 4th Hole" has exploded in popularity across social media platforms like TikTok and X (formerly Twitter) in recent months, becoming one of the most confusing and debated slang terms of late 2023 and early 2024. This term, which is almost exclusively used in discussions about female anatomy and sexual contexts, does not have a single, agreed-upon definition, leading to widespread curiosity and misinformation. As of today, December 19, 2025, its meaning remains highly fluid, ranging from anatomical misinterpretations to humorous, nonsensical body parts and even a reference to a male body part.
Understanding "The 4th Hole" requires navigating the ever-changing landscape of internet humor and sexual slang. The term's viral nature stems from its ambiguity and the shock value associated with discussing a "fourth" orifice beyond the three traditionally acknowledged external openings in the female body—the vagina, the anus, and the urethra. This article breaks down the seven most common and most recently cited definitions of this trending, often explicit, slang term.
Anatomical Context and The Viral Origins of the Slang
Before diving into the slang definitions, it is crucial to establish the baseline anatomical context. Biologically, the human female body has three primary external openings in the perineal region: the vagina (for menstruation, intercourse, and childbirth), the anus (for defecation), and the urethral meatus (for urination). The entire premise of "The 4th Hole" slang is to identify a fourth potential opening, which leads to the numerous, often contradictory, definitions that have circulated online.
The term gained significant traction and entered the mainstream slang lexicon following a viral social media post in September 2023. A confusing post by a user on X (then Twitter) sparked widespread discussion, with people attempting to decipher what this mysterious "fourth hole" could possibly be. This initial confusion fueled its spread and allowed multiple, competing definitions to take root simultaneously on platforms like Urban Dictionary and TikTok, cementing its status as a piece of internet folklore.
The 7 Most Common Definitions of 'The 4th Hole'
The definition of "The 4th Hole" is highly context-dependent, varying dramatically based on the social circle or online community using it. Here are the seven most frequently cited and debated meanings, from the most viral to the most obscure.
1. The Popliteal Fossa (Behind the Knee)
This is arguably the most nonsensical and humorous definition, yet it is one of the most frequently cited on Urban Dictionary and in social media jokes.
- The Definition: It refers to the pit or hollow area located at the back of the knee, anatomically known as the popliteal fossa.
- Context: This definition is almost certainly a joke, a form of internet trolling, or a deliberate attempt to create a ridiculous, non-sexual answer to a sexually-charged question. It is often cited as being "discovered" by fictional characters in pop culture, adding to its absurdity.
- Topical Entity: Popliteal Fossa, Popliteal Artery, Popliteal Vein, Popliteal Nerve.
2. The Urethral Meatus
This meaning is a more anatomically grounded interpretation, though it still stretches the definition of a "hole" in a sexual context.
- The Definition: This refers to the external opening of the urethra (the tube through which urine exits the body), also known as the urethral meatus.
- Context: In traditional sexual discussions, the three "holes" are usually considered the vagina, anus, and mouth. When people discuss "all four holes," they sometimes include the urethra as a potential, though medically discouraged and rarely used, orifice for sexual play. This definition is common in discussions about extreme sexual experimentation.
- Topical Entity: Urethra, Urethral Meatus, Bladder, Urinary Tract Infection (UTI).
3. The 'Faux' Thigh-Butt Dimple
This particular definition gained massive traction on TikTok and is related to specific body types, particularly those with a "bubble butt" or "phat thighs."
- The Definition: This is a perceived indentation or crease created by a specific distribution of body fat and muscle where the upper thigh meets the buttocks, creating a temporary, "fourth fuckable hole" or dimple when a person stands upright.
- Context: This is a visual phenomenon, not a true anatomical opening. It is a highly aestheticized and objectifying definition that focuses on a particular body shape, often associated with the BBL (Brazilian Butt Lift) or "thicc" body trend popular on social media.
- Topical Entity: Adipose Tissue, Gluteus Maximus, Thigh Adductors, Body Positivity.
4. The Male Anus (Pegging Context)
In a very specific context, "The 4th Hole" is not a female body part at all, but rather a reference to the male partner's anatomy.
- The Definition: When a woman claims to "do all four holes," the fourth hole being referenced is the male partner's anus.
- Context: This definition is used in discussions about the sexual act of pegging, where a woman penetrates a male partner anally, typically using a strap-on dildo. It shifts the focus of the "four holes" from one person's anatomy to the orifices involved in the sexual encounter between two people.
- Topical Entity: Pegging, Anal Sex, Strap-on Dildo, Perineum, Male Anus.
5. Breasts/Tits (Titty Fuck)
Another common Urban Dictionary entry equates the term with the breasts, specifically in the context of a "titty fuck."
- The Definition: A slang term for a "fuckable" set of breasts, where the space between them is used for penetration.
- Context: This is a crude, non-anatomical definition that treats the space between the breasts as a metaphorical "hole" for sexual activity. It falls into the category of highly explicit sexual slang.
- Topical Entity: Mammary Glands, Cleavage, Intermammary Cleft, Sexual Slang.
6. The Ears (Metaphorical)
A less common but more positive and metaphorical definition suggests the "fourth hole" is a non-sexual one.
- The Definition: The ears, symbolizing a woman who is a good listener or has an open mind about sex, relationships, or life in general.
- Context: This is a notable outlier, as it attempts to reclaim the term from its explicit connotations. It’s a metaphorical use, implying emotional or intellectual openness rather than physical anatomy.
- Topical Entity: Open-mindedness, Active Listening, Communication, Auditory Canal.
7. The Belly Button (Navel)
Although less common than the others, the navel or belly button has been suggested as a candidate for the fourth hole, especially in non-genital discussions.
- The Definition: The umbilicus, or belly button.
- Context: This is another example of a non-traditional orifice being considered. While the navel is a depression, it is not an open cavity in the same way as the vagina or anus, and is very rarely involved in sexual contexts, making this a fringe definition.
- Topical Entity: Umbilicus, Navel Piercing, Abdominal Wall, Umbilical Cord.
The Dangers and Topical Authority of Slang Terms
While the term "The 4th Hole" is largely a phenomenon of internet slang and humor, it highlights a crucial point about the difference between slang and accurate anatomy. The widespread confusion and the inclusion of the urethra as a "hole" for sexual purposes can be dangerous. The urethra is a sensitive part of the urinary system, and sexual penetration can easily lead to severe urinary tract infections (UTIs) and other injuries to the delicate urethral lining.
Furthermore, the viral nature of this term demonstrates how quickly new slang can emerge and how context can be completely lost. The meaning of "The 4th Hole" is a perfect example of a floating signifier—a term whose meaning is entirely dependent on the group or subculture using it. To maintain topical authority in discussions of modern slang, one must acknowledge the multitude of meanings, even the most absurd ones like the popliteal fossa, as they are a genuine part of the term's current usage and history.
In summary, if you encounter the phrase "The 4th Hole," the most likely meaning in a sexual context is either the urethra or the highly aestheticized thigh-butt crease. However, the most viral and humorous definition remains the pit behind the knee. Always consider the source and the social media platform when interpreting this confusing, controversial, and constantly evolving piece of modern slang.
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