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
Get the pumpingmug. 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
Get the Pumpmug. 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
Get the Pumpmug. 
N - The opposite of moshing. A group of guys and girls that grind and make out, sometimes going all the way in the crowd at a concert. Usually during raves.
Dude #1: I'd rather go Pumping at a concert than Moshing.
Dude #2: Dittto, better to make out with hot chicks than rub all over sweaty guys.
Dude #2: Dittto, better to make out with hot chicks than rub all over sweaty guys.
by Pyre Punk February 27, 2011
Get the Pumpingmug. by ill k August 20, 2003
Get the Pumpingmug.