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29.
A Cock Knocker is an individual who frequently masterbates men. Calling a man a Cock Knocker is like calling him a homosexual. Calling a woman a Cock Knocker is like calling her a loose whore who touches men frequently
Nelson is a Cock Knocker, therefore, he masterbates other men and is a homosexual.
by Rino Ramagioli November 19, 2003
33 41
 
30.
Someone who knocks there cock.
Omfg, Jojo his cock knocked by a cock knocker!!!!!
by Daniel and Higor (aka Igor) October 21, 2003
4 12
 
31.
Cock knocker is someone who loves the cock! loves the touch,the look & the smell of a hard member. A cock knocker is similar to a knob jockey however there is no penetration! Basically this phrase is an uber insult to men,if someone calls you it you gotta be ready to retalliate with similar such insults! so i hate my mate-call him COCK KNOCKER
Mark Hamill is a cock knocker(jay & silent bob)
Barnes is a cock knocker! (not jay & silent bob
"I have more hate for you,you are truely the world's biggest COCK KNOCKER"
by EGGMUNDO November 23, 2005
3 12
 
32.
A really dumb guy. The kind of exceptionally dumb guy who whacks his hardon against door frames and shit, literally knocking his cock.

Especially applicable to a guy who sucks, yet has a rad girlfriend.
"Ditch that guy, like yesterday. Your boyfriend is a fucking cock knocker. You could do so much better. Like me."
by Danny Delinquent March 29, 2005
17 26
 
33.
any person who, if approached by a male unit, knocks the cock, in a way of personal pleasure.

introspectively: knocks the cock is to suck a penis using multiple pleasuring tools such as the saliva, and tongue. fingers optional
by tommy knockers June 11, 2002
2 11
 
34.
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
5 15
 
35.
One who engages in the act of touching his penis to another man's penis in a "knocking" fashion.
I know for sure that Bob is a cockknocker because I witnessed him slapping another man's penis with his own.
by Anonymous February 14, 2004
29 39