To drink the contents of one's beverage. Used especially when alcohol is concerned. Literally to tilt the bottom of one's glass upward until it is empty.
by Becky C March 14, 2008
1. Coitus a tergo, a sexual intercourse where a man is behind a woman, both kneeling. Also reffered to as doggy-style,dog-fashion.
by necrotism May 21, 2006