When a girl's butt looks good in tight jeans, but it busts out of those jeans when she takes them off in the same way as a can of biscuits when you open the can.
Damn bro, her ass is phat.
Nah dude, she has a biscuit butt. Don't be deceived by the jeans.
by B.Hein October 17, 2019
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A small, but lifted butt.

Cute and in-shape
You could tell she was in shape because of her biscuit butt.
by Sociopathic Tendency May 14, 2016
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I coined the term in my 1992 Fantagraphics comic of the same name. So back off slang stealers. It is named for an ass tampon made of toilet paper which looks like a biscuit when molded by the butt. It is not a name for a turd.
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biscuit made entirely of solid dried shit and ass skin flakes
by bob May 9, 2003
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