A Pump Like Instrument, That Is Used For Clearing Out Ones Rectum, Prior To Anal Sex.
John: Ima Do Her In The Arse Later.......

Tom: Make Sure She Bum Pumps First, Otherwise, She Will, Without A Doubt, Dirty On Your Cock Stick...
by Buperter August 06, 2011
To inflate a woman's anal canal by pumping one's phallus in and out. The air pressure created by the pumping will result in a massive expulsion of the air once the phallus is removed.

The expelled air often has a minty aroma and tastes mildly sweet.
1. I bumpumped her and the sweet essence of heaven was emitted.

2. She was bumpumping me while i bumpumped the hell out of the girl in front.
by KorrrrrrnHuska December 14, 2009

Free Daily Email

Type your email address below to get our free Urban Word of the Day every morning!

Emails are sent from daily@urbandictionary.com. We'll never spam you.

×