The sexual act of thrusting objects in and out of a ladies Front Bottom or rusty bullet hole or the aforemantioned of a man. Can be a act of self particpation or shared with a partner of group.
Michael was keen to experiment in the bedroom department. Jane too. Although the act of pumping will not be revisited after Jane returned the compliment.
by WaterBoy June 19, 2006

1) "Dude, that is a nice pump."
2) "Dude, wait in the car while I pump."
3) "Dude, I was so horny I was pumping like mad."
2) "Dude, wait in the car while I pump."
3) "Dude, I was so horny I was pumping like mad."
by Soiled Undergarment August 17, 2003

To break wind. A slang term from England that isn't used that much anymore because "fart" is more widely known and the word usually comes to mind quicker.
by ManofG December 28, 2007

Doing something with a very high level of enthusiasm or awesomeness. Also can be referred to as PUMPing weights.
Terry: How'd you do on that math test?
Tim: I PUMPed right through it.
Frosty: You look fresh today dawg.
Liquid: I PUMP all day, everyday.
Tim: I PUMPed right through it.
Frosty: You look fresh today dawg.
Liquid: I PUMP all day, everyday.
by Liquid All Day April 6, 2011

by John Matt June 19, 2003

by Zenhachirou May 6, 2003
