The act of fornication from the backside, Doggy style, while the partner is vomiting. Each thrust helps to expell the deep stomach contents.
After a night of drinking my girlfriend needed a bilge pump to make her feel better.
by Bubba33 January 28, 2008
The act of doing a girl doggystyle as she spews vomit from her mouth.
Dude, did Jimmy tell you? He totally pulled the bilge pump on that bitch.
by Ben Eisenstaedt September 16, 2006