Two men are cock cousins when they have both had sex with the same hole of any specific woman.
Also see snatch sisters.
"My ex-girlfriend has become a right slut; I'm probably cock cousins with half of {town/bar clientรจle} by now."
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When you get a surprise handjob from your lesbian cousin.
Fuck man I feel gross. I was walking by then bam, she gave me The Crooked Cousin Cock Grab.
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