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The action of masturbation.

Can be done to one's self, such as pumping your own gas, or have it done by another, in the action of having your gas pumped.
After she left me for another guy, I had to go back to pumping my own gas to shitty porn.

Last night this chick was pumping my gas, no questions asked.

Pumping gas, we all do it at soome point.
by ives1337 August 09, 2010
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4
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 06, 2010
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