8
A special door that keeps male chickens from entering a henhouse.
"Dude, that rooster is trying to get at the hens, but the cockblock is keeping him out!"
by Oleg Yavorsky March 22, 2009
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9
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 December 07, 2004
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10
Anyone or anything that gets in the way of you getting some. The cock-block can be male,female, or inanimate. Many cock-blocks can't get any themselves so they try to stop somebody else. If they ain't scorin' nobody's scorin'. No scene is too embarassing in their undying quest to prevent your action. If your buddy's a cockblock don't bring him or her.
1. My old boss, Bob is such a cock-block. He won't let any of us guys chat with the female employees.

2. My car was a cock-block. It broke down on my way to the party so I couldn't go and possibly hook-up. I had to wait for the tow-truck to come and tow me home.
by DennisIsEvil February 28, 2006
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11
Trying to prevent someone from getting a woman/piece of pussy that someone else is trying to get.
I am talking to that blond chick, and that asshole cock blocks me, trying to get her for himself.
by ubersoldat August 19, 2006
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12
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 August 26, 2005
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13
1.) To interfere with someone who is getting acquainted with, conversing with, or hooking up with a member of the opposite sex

2.) A motor vehicle maneuver, usually done by insecure twenty-something males (who think that everybody wants to race them) and other ignorant people, designed to prevent someone from changing lanes in traffic
1.) At the club, Sal was was about to get Lisa's phone number, when Nathan came up cock-blocked him by asking him if he found a job yet. He made it even worse when he reminded Sal that they had to hurry up and catch the last bus home. Lisa rolled her eyes and walked away.

2.) I realized that my exit was coming up so I began to change lanes, but that ricer cock-blocked me

3.) The traffic on the highway was hell, mostly because of that soccer mom driving the minivan in the far left lane, pacing and matching speeds with the semi in the middle lane. She cock-blocked us all.
by TheGrandInquisitor January 24, 2005
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14
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 November 09, 2002
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