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)
-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

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 1, 2003

by Daniel and Higor (aka Igor) October 21, 2003

by pchmaint January 5, 2006

by chronic007 November 21, 2009

A member of the public who constantly wastes car sales executives time by asking fucking stupid questions and wanting to test drive every car on pitch.
by carsales May 14, 2010

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
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
