A term used to described an overpopulated social setting, i.e. bars, clubs, lines at Disney World, men's bathroom, etc. The setting being so packed that male genitalia, regardless of intention, are constantly rubbing on the buttcheeks of surrounding individuals.
" Man there are so many people in here tonight, it's balls to buttcheeks."
Blueberrybuttcheeks are when your bottom is spanked so hard and for so long that they no longer resemble rosy cheeks but instead look more like a blueberry tart. The spankee is usually in floods of tears at this point.
Uncle Richard threw me over his knee and gave my ass a damn good thrashing because he felt I was being impertinent. The fact I'm 39 and a headmistress and his penis erect throughout notwithstanding, I felt it wrong that he should leave me with blueberry buttcheeks for a simple misunderstanding. I came home and applied some antiseptic cream and slowly my ass is feeling like its old self - heavily sagging and puckered from all the ass fucking my husband seems to enjoy.