Ass: Meaning, Buttocks Slang, Sexual Usage, and Consent

A person may use ass when talking about:

• the shape or appearance of the buttocks;
• sitting or falling on the rear of the body;
• sexual attraction to someone’s buttocks;
• anal touch or sexual activity;
• a foolish or unpleasant person;
• a donkey.

Simple examples include:

• She fell on her ass.
• The jeans fit tightly around his ass.
• He used ass as slang for the buttocks.
• Calling someone an ass means calling them foolish or irritating.
• The anatomical word for the opening between the buttocks is anus, not ass.

Because ass may sound crude, it is usually unsuitable for formal, medical, educational, or professional communication.

• an ass;
• one ass;
• two asses;
• someone’s ass.

Examples include:

• He landed on his ass.
• The character behaved like an ass.
• The farmer owned an ass.

The word may also appear before another noun:

• ass cheek;
• ass hair;
• ass tattoo;
• ass pain;
• ass joke.

These combinations are informal or vulgar. Neutral alternatives include buttock, gluteal, anal, or rectal, depending on the intended meaning.

The buttocks contain:

• skin;
• fat;
• connective tissue;
• the gluteal muscles;
• nerves and blood vessels.

The anus is located between the buttocks, but the buttocks and anus are not the same structure.

For example:

• pain in an ass cheek may involve muscle or skin;
• anal pain occurs at or inside the anus;
• rectal symptoms concern the final section of the large intestine.

More precise wording helps when discussing health concerns.

Ass is informal slang that may refer broadly to the buttocks or anal region.

Buttocks is the neutral term for the rounded outer parts of the rear body.

Anus is the anatomical opening through which stool leaves the body.

Rectum is the internal final section of the large intestine leading to the anus.

Compare:

• He injured his buttock while exercising.
• The clinician examined the anus.
• The patient reported pressure inside the rectum.
• The comedian made a joke about someone’s ass.

In medical communication, buttocks, anus, and rectum are clearer than ass.

Arse is the traditional British and Irish spelling for the same meaning.

Examples include:

• American English: “Get off your ass.”
• British English: “Get off your arse.”

In British English, ass traditionally means a donkey, although American usage is widely understood through international media.

Both ass and arse may function as insults or vulgar body-part words.

Examples include:

• “Do not be an ass.”
• “I acted like an ass yesterday.”
• “He made an ass of himself.”

The insult may sound mildly humorous among close friends or openly hostile during an argument.

It does not usually make a literal statement about someone’s body.

Examples include:

• a wild ass;
• a domestic ass;
• an ass carrying supplies.

The insult meaning developed partly from stereotypes portraying donkeys as stubborn or foolish.

The plural of ass is asses, whether the word means donkeys, foolish people, or buttocks in slang.

• attraction to the buttocks;
• touching or kissing the buttocks;
• spanking;
• anal stimulation;
• anal penetration;
• sexualized photographs of the rear body.

The word itself does not specify the exact activity.

For example, ass play may involve external touch, spanking, anal stimulation, or penetration. Partners should explain what they mean rather than assuming that everyone understands the phrase in the same way.

• shape;
• movement;
• softness or firmness;
• muscular appearance;
• association with nudity or intimacy;
• cultural presentation in clothing and media.

The slang word booty often emphasizes sexual attractiveness more playfully than ass.

Attraction to someone’s ass does not give permission to stare persistently, photograph, comment, touch, slap, or expose the person.

It may include:

• massage;
• kissing;
• licking;
• spanking;
• external anal touch;
• fingering;
• sex-toy use;
• anal penetration.

Consent should identify the specific activity. Agreement to touching the buttocks does not automatically include spanking, anal contact, or penetration.

A person may enjoy one type of ass play and refuse another.

Consent is needed before:

• grabbing the buttocks;
• slapping or spanking;
• pulling down clothing;
• photographing the area;
• exposing someone’s buttocks;
• touching the anus;
• attempting penetration.

A partner may withdraw consent at any time.

A joke, flirtatious comment, revealing clothing, previous sexual contact, or physicalarousal does not create permission.

For anal penetration, safer practices may include:

• clear consent;
• gradual movement;
• generous compatible lubricant;
• clean, body-safe toys;
• flared bases on inserted toys;
• condoms or other barriers;
• stopping when there is sharp or continuing pain.

Objects without a flared base may become trapped in the rectum.

Small amounts of temporary discomfort may occur, but severe pain, heavy bleeding, fever, abdominal pain, or an object that cannot be removed requires medical attention.

Possible risk-reduction measures include:

• condoms;
• gloves for manual penetration when appropriate;
• dental dams for oral–anal contact;
• sufficient lubricant;
• cleaning toys between users and body areas;
• changing condoms before moving from anal to vaginal penetration;
• STI testing;
• vaccination and HIV prevention where appropriate.

A toy or penis should not move directly from the anus to the vagina without cleaning it and changing the condom because intestinal bacteria may cause infection.

Context matters. A consensual sexual partner may welcome certain language that would be inappropriate from:

• a stranger;
• a coworker;
• a teacher;
• a supervisor;
• a healthcare professional outside a necessary clinical discussion.

Respectful communication considers the person’s preferences rather than assuming that sexual comments are flattering.

• get your ass moving: hurry or begin working;
• work your ass off: work extremely hard;
• kick someone’s ass: defeat or physically attack someone;
• save your ass: protect yourself from trouble;
• pain in the ass: an irritating person or problem;
• make an ass of yourself: behave foolishly;
• badass: a tough, impressive, or highly capable person;
• half-assed: done carelessly or with insufficient effort.

These expressions may not refer literally to the body, but most remain informal and some are vulgar.

Ass and rectum mean the same thing.
The rectum is internal, while ass is an informal external or general expression.

Ass is always sexual.
It may mean buttocks, donkey, foolish person, or appear in nonsexual idioms.

Ass and arse are unrelated words.
They commonly express the same body-part meaning in American and British English.

Touching someone’s ass is harmless flirting.
Unwanted sexual touching violates consent and may be harassment or assault.

Consent to touching the ass includes anal penetration.
Each activity requires specific agreement.

1. Ass is informal American slang for the buttocks.
2. The word ass may also mean a donkey or a foolish person.
3. Is ass appropriate language for a medical appointment?
4. She bruised her ass after falling on the stairs.
5. He apologized for acting like an ass during the argument.
6. The word ass may have a sexual meaning when it refers to attraction or anal activity.
7. Touching another person’s ass requires consent.
8. The phrase ass play does not identify one specific sexual activity.
9. British speakers may use arse where Americans use ass.
10. Accurate discussion of ass should distinguish the buttocks, anus, rectum, insult, and sexual slang.

The term is imprecise. Sexual partners should clarify whether ass means the outer buttocks, anus, or a particular sexual activity. Consent to one form of contact does not include every other form.

Accurate sexuality education distinguishes slang from anatomical language and emphasizes consent, lubricant, barriers, hygienic toy use, and respect for personal boundaries. It also recognizes that sexual comments or touching involving someone’s ass may be unwelcome or abusive when permission is absent.