22
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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23
Someone who likes to be smacked with a cock in the face
"Come on Thomas slam that cock on my chin!" "your such a nasty cockknocker"
by IFGODWASONEOFUS February 01, 2015
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25
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)
Being a cockknocker is not a good thing.
by Gumba Gumba February 27, 2004
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