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."
"We went there last night, the place was
packed balls to buttcheeks."