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
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This bitch gave me head last night, and man was she a great cockpump!
by Billy7729 February 8, 2007
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The mouth of a person. Best when accompanied by the word 'saucy'
I told John that Billy was talking smack, so John told me to Billy to shut his saucy cockpump. John the suggested we get Taco Bell.
by kkevo November 22, 2005
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