cock block

a cock block is one hell of an ugly mother fucker that knows he/she cant get ANY... not even from a lepricon so they hang around people about to fuck

victom of the block: dude, your room mate is a fucking COCK BLOCK!!!
depresed room mate: yea i know, lets take him out back and beat him with rocks then with our dicks

by victim of the blockage October 21, 2003

cock block

The act of interfering with a friends plan to have sex.

Knowing that speedbag would be getting his going to Vegas blowjob the morning he was leaving, his good buddy thought it would be funny to cock block him and showed up at his house to pick him up 15 minutes early for the second year in a row.

by speedbag March 24, 2009

cock block

someone that prevents you from hooking up hanging out or anything of that nature with a woman

jim is trying to get ashleys number and kyle comes up and cock blocks him with hey you get your license yet? ashley walks away and laughs while kyle precedes to get his douche nozzle ass kicked

by franko el tanko December 8, 2006

cock block

The act of preventing one of your friends the privilege of hiding his Wilson in a womans cooch

Karl and Steven cock block john whilst he tried to hide his Wilson

by IanXD March 2, 2008

cock block

to prevent a friend from hooking up with someone, maybe because she's too drunk or perhaps because he is supa busted. it could be the other way around too.

"Sweetie, I'm going to have to cock block here. Homie looks mad busted and I know you don't want to wake up in the morning thinking 'What The Fuck'."

by dopeLabber November 28, 2001

cock block

A person, who is to a heterosexual man, non arousing. In other words, ugly.

"That chick is so ugly"
"Yea, she's a cock block"

by Chinja101 May 18, 2009

cock block

When two individuals like the same person, and guy/girl #1 prevents number 2 from getting to base 3.

Man, I was about to get with Andrew when that blonde bitch "had to talk to him"....She cock blocked me all night like that, so I put diuretics in her beer....

by Lisander Kitchenmaster August 17, 2003