Vomit Squirting from one's Butthole.
The Bummit Just kept on Flying!
by Matt January 05, 2004
To Severly wreck a person's anus by pummeling them in the ass with an object.
Man, I bummited the shit out of Chelsa last night, she's not gonna shit or walk right for a month.
by Gibbina January 10, 2007