cock block

a friend (usually male) that will not allow one, to sex up someone else (usually female)

Man, why did that asshole cock block me last night, she was so drunk I was gonna get some.

by angle December 1, 2004

cock block

preventing a hot chick from hooking up with a man on a one night stand by making an ass of yourself

a job usually taken by she-beasts and grenades

by Da Nastee One May 7, 2004

cock block

Someone who interferes with action you have already set up.

Erin cock blocked the threesome that was already in motion.

by Billy Blue Balls July 12, 2003

cock block

When a someone you know prevents you from looking good in front of the ladies

Jon Dejesues
aka animegamer

by miguel June 7, 2004

cock block

One who spoils a close friends attempts in mating

1. When Bonni foils finnys plans by calling up finnys girl. Thats true cock blocking!
2. Bonni, Joby, Sunil and Sajan goin over to Bino's house When Bino and his special someone are at the house trying to get it on; thereby stopping any chance of getting any that night!.
That is referred to as tag team or Group Cockblocking

by Jobym April 30, 2007

cock block

To prevent one using one's cock in the manner that one desires.

Neutering Antoine, the cute cute cat, was the ULTIMATE cock block.

by m. w. November 25, 2006

cock block

*verb

To prevent a chicken from entering a dwelling

Person 1: Dude, why cant my chicken enter your house
Person 2: I totally cock blocked it

by HelloAnchorage November 11, 2009