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1. cockblock
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 Apr 12, 2003 add a video
2. cockblock
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.
She is cockblocking you bro.
by The GIMP Sep 23, 2003 add a video
3. cockblock
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 Oct 13, 2003 add a video
4. cockblock
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 Feb 6, 2003 add a video
5. cockblock
a person who comes between you and a successful score by continually derailing the train or showing up at the worst times possible with inane, unrelated blather
a woman who won't shut up when you're trying to chat up her best friend
by kitznegari Nov 9, 2002 add a video
6. cockblock
To fully understand the ways of a clockblock, one must set a scenario. Ok, say you've been out all night hanging with this girl, and can sense that you are mere seconds away from going upstairs too hook up with her. Here comes your good buddy cockblock. His drunk, attention-needing self jumps right into the picture and tells your woman how beautiful she is, then throws up all over her. Instead of giving you a quality BJ, she drives old Cockblock home, leaving you by your lonesome to jerk off all night.
Male: You have really pretty eyes.
Female: Do you feel like going---
Lukas: I LOVE YOU!

Male:"Damn cockblock...."
by Ruf Aug 26, 2005 add a video
7. Cockblock
When you are attempting to get close to a girl and your buddy won't leave the room or starts telling less than flattering stories of you that cause you to lose an opportunity with your new female acquaintance.
Sara was sitting on the couch in the living room, Eric had been talking with her all evening, the party was over, Eric was attempting to get close to Sara but David wouldn't leave the living room even though he kept nodding off.
by Eric Dec 7, 2004 add a video
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