1. To prevent a male friend or associate from getting some action.

2. Any such attempt to prevent a male friend or associate from getting some action.
1. Damn, Johnny just totally cockblocked his roommate. Ass.

2. OK, Isaac's making his move on Clarisse in the living room, and the game is on in fifteen minutes. We're going to have to attempt a cockblock.
by Jake April 13, 2003
Get the cockblock mug.
what harry potter does on the regular to ron and hermione, literally almost everyday
whooaa did you see that cockblock the other day?

yeah i can't believe harry put his arm around hermione like that, ron was totally about to make a move
by ashsal June 25, 2011
Get the cockblock mug.
people who interfere with a person's ability to get laid.
can be used for women and men.
Why are these whores being such cockblockers! I saw him first!
by twouptwodown December 17, 2008
Get the cockblockers mug.
1. To interfere with a man's attempts to seduce a woman.

2. abbr. Cockblocker(n.)
I was putting the move on this chick and Ralph showed up and cockblocked me.
by Anonymous February 7, 2003
Get the cockblock mug.
When you're hanging out with a girl, and one of your friends tries their hardest to split you and the girl up as a joke. This makes your friend a cockblock.
Clayton: Hey so do you maybe wanna-
Colton: LET'S GET OUT OF HERE DUDE!
*The girl Clayton is talking to leaves.

Clayton: Thanks cockblock.
by Benqueedo Man October 22, 2016
Get the Cockblock mug.
1.The act of obstructing one person's advances towards another.
2.A situation that obstructs; an obstacle
3.An act of ill etiquette in which a male is speaking to one female in a group of females, and the alpha female creates a disruptive environment.
by The GIMP September 24, 2003
Get the cockblock mug.
a person who interferes with one's sexual intentions with another person
Randy was a cockblock because he told Jaime that this guy she knew was just using her for sex.
by Bob Mastuff October 13, 2003
Get the cockblock mug.