A homosexual who engages in very aggresive sexual contact, consensual or not!
Holy tits tom, you won't believe it! Jebediah just got viciously hand raped in the park by that serial cock knocker. Is he alright? No, he got ass fucked aswell.
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Any non-penetration act in which the male penis (as opposed to those weird female penises i saw on TV... yuk!) comes into contact with a hand. Most likely but no tlimited to:

-Someone who makes frequent attacks to the cock

-Someone who fondles the cock

-Someone who loves the cock

-Someone who jacks off the cock (not their own)
by Gumba Gumba February 27, 2004
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a guy who likes to play with his dick
Jill likes to play with her cock knocker
by Danielle March 10, 2003
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'That DJ is playing the worst shit, he's such a
'Cock Knocker'!
by Erinjess February 23, 2008
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An offensive term suggesting a male is Gay
Richard G is a Cock Knocker.
by S Littlewood September 9, 2008
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When a chick grabs your dick and plays click clacks with your balls
my girlfriend is a cock knocker, when she was blowing me, she pulled my hard cock and my balls clanked together...
by cocker knocker December 2, 2003
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Someone who likes to knock cocks by making a fist, bending the fore-finger then striking the cock with all your might.
You are a cock knocker, your ma's a cock knocker etc etc.
by Wayne Travers May 29, 2006
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