one who pumps men in the ass
Allen Hamilton is an ass pumper
by MATT April 10, 2003
1 more definition
A man who''pumps'' or thrusts his penis into a man or womens anus, Or if the women has a penis(fuckign wierd) can thrust it into another man or womens.
Johny is sure a asspumper, that faggot.
by ErikTHEstonerDUDE August 10, 2006