1 definition by SMairlines
when a guy has sex with a girl with the intent to only get a nut. it consists of 1 - 5 pumps or thrusts followed by ejaculation (dump his load) followed by the departure of the male to go back to the party or wherever it was that he met the victim of the "pump and dump"
much to sallys displeasure, her and jacks sexual experience at keegans party consisted of only a pump and dump in the bathroom.
by SMairlines May 22, 2009