"butt + cleavage= Bleavage"
1. Any showing of the butt when it is intended to be covered up by clothing.
2. When shorts are so short that a person's butt hangs out of the bottom.
3. When a person bends down and their butt crack is exposed.
"omg, did you see becky's shorts in gym class? she's totally got some bleavage going on"
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