An act of sexual foreplay involving 2-3 people. One person farting into their sexual partners mouth, this partner then breathes in the fart gas. This inhalation of fart gas should make them burp. This person then burps the fart gas either back into the farters mouth or into the mouth of the third person; depending on how many people there are.
"Hunny, Shall we get this gas pump going or what?"
"Oh I've never tried gas pumping before"
"Oh it's easy, il teach you"
"Oh I've never tried gas pumping before"
"Oh it's easy, il teach you"
by Chercules June 28, 2014
by lil6ix April 12, 2018
When a female/male kneels behind a male while he is standing and has an erection. The kneeling person reaches between his legs and grabs his erection like a microphone, pulling it down, then sticking their thumb up his ass with the same hand. Then they squeeze their hand tight, not unlike that of a gas pump handle.
by Chaindive August 4, 2007
The act of urinating in a female orifice while achieving maximum penetration. Please do not smoke cigarettes or use your cell phone during this activity. It is not a hazard to your health but it is just rude.
by fivecocksatwilcox July 4, 2005
by Hip March 29, 2003
When a woman tugs on a man's flaccid penis while urinating. She tugs on it in a fashion so that she is getting sprayed like gasoline coming out of a nozzle.
Guy 1: Gina is such a whore.
Guy 2: Why, did she offer to give you a golden gas pump?
Guy 1: Yeah, and I totally went for it.
Guy 2: Why, did she offer to give you a golden gas pump?
Guy 1: Yeah, and I totally went for it.
by awesomesaus December 20, 2012
Fuck a girl with your cock, hence the pump. Once the vagina is dilated, fart in the orifice. Hence the gas. Michigan, because that's where my last girlfriend was from.
by krautmonkey December 19, 2013