bum-pumping

A male who pokes another males ass relentlessly with his piece

Mike was bum-pumping Liam

by 7841sugnuf May 26, 2010

bilge pump

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 19, 2008

pumping gas

A polite way of saying that you have to or have already farted.

i.e.: "I ate a lot of beans and now I am pumping gas".
"Who just pumped gas?" "I've been pumping gas all night."

by I_AM_FARTICUS March 6, 2010

Cat Pumping

When one is unsatisfied with having sex with humans, they turn to performing hardcore sex acts on cats.

Jim is tired today because he was cat pumping all night long.

by Billy Fear October 17, 2010

Under The Pump

When you masturbate then do a backflip as you climax so that you ejaculate on your own face in mid-air.

Person 1: "Is that a bit of ranch dressing on your face?"
Person 2: "Nah, I've just been under the pump"

by Lord Of All Things Sasquatch November 9, 2020

piston pump

Slang referring to an aggressive, furious, rapid act of fellatio. The piston pump receives its name from the rapid head movement exhibited by the provider of the fellatio, which is said to resemble the action of a moving piston. This is also referred to as the jackhammer. The piston pump is much sought after in the world of fellatio and should be received with grace and humility.

Man, that piston pump was great. I have never been sucked off so furiously.

by Boozy Barfly November 11, 2008

M.K. Pump

To place your arms perpendicular to your torso, at 90 degree angles, and to flex your biceps.
This action is often used after an achievement.

Jamal: After I slayed the bitch, I jizzed on her face. All this while doing the M.K. Pump.

by mkruss February 4, 2009