Top Definition
Having sex with a woman. Enthusiastically pumping away at her vagina. You know when shes full, she starts squeaking out fanny farts.

Can also use pumping up the, girlfriend/wife/etc.
Guy#1: What did you get up to last night?
Guy#2: Oh, just spent the night pumping up the woman!
by Badmojo October 05, 2008
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