friend 1: i gave that girl some prime crush butt last night  friend 2: i know, the moaning kept me up all night you motherfucker
the act of repeatedly pounding the ass of another living thing by way of pelvic thrusts
"friend 1: i gave that girl some prime crush butt last night  friend 2: i know, the moaning kept me up all night you motherfucker" What is the definition of "crush butt"?