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2.
1. to make the butt cheeks purse together 2. to situate onesefl so that surplus butt pops over the top of one's pants
When a girl with a big butt sits on a barstool with her thong all "accidentally" hanging out.
av Amber 18. januar 2004
 
1.
The space between the cheeks of your butt,when the cheeks are squeezed together. Particularily sexy when a female is wearing ultra low rise jeans, and exposes just a little of it!
Wow, did you see the butt cleavage on her dude!
av Jeff Gawrys 29. oktober 2003
 
3.
When you can see the top of a male swimmer's butt crack because his speedo is too small or too tight. Can be sexy on hot college swimmers.
-Joe needs a bigger suit, he has major butt cleavage.

Girl: Ooh, check out that swimmer!
Girl 2: Wow yeah, he has hotttt butt cleavage!
av SwimmChick247 5. desember 2010