meaning of Ass Chugging

Ass Chugging meaning in Urban Dictionary

Drinking alcohol which will be poured through break of some other's ass on the way to the drinker's lips. Generally a fraternity ritual where drinker lies on his straight back, a bare-assed bro crouches straight over the lips associated with drinker, and another brother pours the beer down the duration of the croucher's ass.