1.Someone who hits you in the balls delibertly when in the middle of a fist fight, a deliberate cheat move often used when losing.
2.Fictional Charcter Mark(Luke Skywalker) Hamill played in the Kevin Smith movie ‘Jay an Silent Bob Strike Back. Cockknocker uses the first definition with a giant fiist. From the fictional comic ‘Bluntman & Chronic’
1.I was kicking his whiny punk ass, then he cockknocked me and it was all over.
2.Chronic: Why they call you Cocknocker?
Cocknocker: Actually there’s a funny story behind that, you’re gonna love this, true story…
(WHAM)
Chronic: Eeep.