cock-blocking 

When a guy or a friend tries to get with a girl your talking to, hence, "Cock-blocking". Keeping you from getting a piece of ass.

"Dont be cock-blocking me from my girl you fag!"

cock-blocking by Johnny B September 3, 2003

Cock Blocker 

when the male is prevented from getting punani due to a third wheel

Meg and Sean was about to get freaky till Missys cock blcoking ass jumped in

Cock Blocker by monet July 14, 2004

cock blocker 

Someone who tries to interrupt you while you and someone are engaging in some sort of sexual activity, usually with something totally meaningless or pointless.

Ooooh, aaaah, hmmmm, unngh (me and my girl getting frisky, hehheh)
*knock knock*
Flatmate:"Wanna cuppa"?
Me:"Fuck off and leave me alone you cock blocker".

cock blocker by Safecracker G October 15, 2004

Cock Blocked 

1) To be cock blocked is when someone prevents you of hanging or talking to a girl of interest.

Cock block can happen when you are already talking to a girl(or guy) of interest alone and someone comes up and starts to talk and hang out with you.

2) Cock block can also happen litterly, when someone prevents you from having sexual intercourse with a female of interest.

1) Moose and Kayleigh were hanging out together and Damion cock blocked Matt.

2) Matt and Kaitlyn were about to have sexual intercourse when some drunk walked into the room and cock blocked Matt.

Cock Blocked by Da-Moose_Productions December 4, 2007

cock blocker 

to deny intimate interaction between a dude and chick with sexual intentions.

holy crap. dylan's mom is a cock blocker!

cock blocker by jay c June 24, 2004

Cock Blocking

Something that should be a illegal.
An act of stopping someone from getting laid.

You're like a giant... cock blocking robot, like developed in a secret fucking government lab.

Cock Blocking by FUCKWE'REALLDEAD September 11, 2010

Cock Blockery

The conscious or subconscious act of driving away any and all pussy within a certain defined radius. The act committed by a career cock blocker who may be a nice guy, but should never be counted on as a wing man.

"Jesus Christ, that William may be a nice guy, but he’s the undisputed deity of cock blockery!"

"That ain't no shit brother... we better move out of his orbit before we're victims of a fruitless cunt shopping expedition!"

Cock Blockery by Musicguy4fun March 10, 2010