Top Definition
A big fatlarge ass found on American women that arises from spending way too much time eating at McDonalds. The kind of booty that hangs over the side of the bench as she is shoving down another quater-pounder with cheese.
OMFG that white women's McButt is hanging so low it touches the floor.
by MoneyG March 28, 2004

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The term for a sexual act whereby one participant places their anus on the mouth of another participant, thereby resulting in the immediate ejaculation of the receiver.
Man, I jizzed a few seconds after she sat on my face so I guess that doesn't count as a McButt.
by funkybuttlovin June 23, 2014

The Urban Dictionary Mug

Lotsa space for your liquids.

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The Urban Dictionary Mug

Lotsa space for your liquids.

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The Urban Dictionary Mug

Your favorite word on a white mug.

Create a mug

The Urban Dictionary Mug

One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

Buy the mug

The Urban Dictionary T-Shirt

Soft and offensive. Just like you.

Buy the t-shirt

The Urban Dictionary T-Shirt

Smooth, soft, slim fit American Apparel shirt. Custom printed. 100% fine jersey cotton, except for heather grey (90% cotton).

Buy the t-shirt