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18.
A punch which is administered in or around someone's genital region, groin area or crotch, et cetera, et cetera.
Reporter: "Jimmy, HOW do you feel about 'My Five Uncles', the show which has replaced your old one, 'Just The Five Of Us'?"

Jimmy: "What do you think, dumbass!? That show sucks my ass!"

Reporter: OK, moving on, how would you reply to the accusations that you were cancelled from your role because you still look 12 years old?"

Jimmy: "HOW many times have I got to say this!? I'm NOT a kid, I'm 51! Take this, you liberal-media-bastard! I'm gonna cockpunch you!"
by Ross March 15, 2005
 
1.
A swift punch, delivered to a male's genitals.
He is such a fucktard, he deserves a good cock punch.
by Bob June 01, 2003
 
2.
a punch to someones groin area
Bill drank Tom's last beer, so Tom gave him a cockpunch
by richard taylor April 25, 2003
 
3.
1:A big thud to a man's pud
2:A legendary online player on Star Wars Battlefront II, known for his battle cry "YOU'VE BEEN PUNCHED.....IN THE COCK!"
Dude my manhood hurts after that dick nasty cock punch.
by Roy Sanchez July 27, 2006
 
4.
closed-fist blow to the penis
These folks deserve a big cock-punch.
by Dave October 22, 2003
 
5.
Not just a word, but a way of life.
Dude I'm totally going to cockpunch that guido in the Ed Hardy ensemble.
by JReid July 26, 2009
 
6.
The act of connecting your fist, at high velocity, with the genitals of a member of the male sex.

It's generally considered that the true cock punch is delivered from a squating posistion, and so is delivered as a jab rather than a uppercut motion.
Protaganist #1 - I'm gonna shag your mum

Protaganist #2 - not tonight your not

Protaganist #1 - AAAAAHHHHHHHH!

protaganist #2 - no one expects the cock punch
by Jaffa29 August 17, 2006
 
7.
A closed fist hitting of the male genitalia, meant to evoke surprise and/or pain.
Dave Haldane was not prepared for the extreme cockpunching he would receive for not giving Rachel a part in school's production of the Rocky Horror Picture Show.
by Johnny Hops May 04, 2005