Cockuum is short for Cock Vacuum. A Cockuum is a person who sucks Cock like a Vacuum cleaner.
John loves cock so much he sucks up every drop of cum like a vacuum. He's a cockuum.
by XTLMeth November 18, 2015
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Cock vacuum.

Another name for a person who likes the dick. Aka, sucking cock, a cock sucker.
"Quick being a cockuum."
by Invict0s November 19, 2015
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