When the bottom of a persons ass cheeks are not covered by their bikini because the ass crack gobbles them up or because of the ass is full and can't be contained.
Take a look at that cheek leak. That ass is perfect.
by Bulldog January 29, 2006
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When a person's shorts are extremely short and the bottom of their butt cheeks hang (leak) a little out of the bottom of their shorts.
Susan definitely has some cheek leak out of those daisy dukes.
by CiBaby June 22, 2013
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A atrocious fart that comes out your buttox between your right and left booty cheeks. To prevent sound you lean forward and shove your buttox backward, then sit as fast as you can, flat, to prevent a really ear-rippling sound that your comrades will hear.
Johnny hit a middle cheek leak in the middle of class and his ass cheeks wobbled back and forth.

The whole class turned to Johnny cause he forgot to sit down fast, and everyone heard and smelt his atrocious fart.

"Yo, Johnny just hit a middle cheek leak"
by Ghostluvr December 8, 2022
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