Top Definition
Man who regularly vacuum pumps his penis, enlarging it for display or pleasure.
He was so thick, he must have been a cockpumper - aieeya!

He's either horse-hung or a cockpumper.
by Tigerdave September 11, 2008
1 more definition
One who pumps a cock much like when your jacking up a car to try and break off the huge black 12 inch cock
Man she was so good then she turned into a cock pumper. I kicked that bitch out
by Will Deshazo June 04, 2006

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