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.
de Jake 12 avril 2003

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A cock block is when two males are moving in the same girl and the fellow with no chance prevents the second male from advancing on the girl. He cock blocked the second guy and both lose.
This scenerio involves a male "friend" of a girl who continually tries to break the friend boundry while another male moves in on the girl. When the "friend" refuses to let the new guy and the girl be alone, he is cock blocking him. In a way, he is throwing the game for both teams, since no one wins... a cock blocker!
de Penguin 6 septembre 2003

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A rare and unfortunate phallic affliction where a man is born with a rectangular, block-like penis.
Jane: "What the hell is that? Is that a Colgate box?"
John: "It's...my penis. I have cock block..."
Jane: "Um...ok. Well, this is gonna cost $90."
de duminik 18 novembre 2010

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1. When a person at a club,party or just at school moves in on someone you are trying to get with.
2. Can be used to describe a situation where a friend moved in on your girlfriend who you were trying to get back with.
1. David was trying to get with this girl at the bar but Fabio pulled a total cockblock. Now David is left with his hand.
2. Dude! Cj totally pulled a cockblock when I was trying to get back with Arri.
de BBWulf 24 septembre 2007

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One who prevents another from scoring with very hot girls.
Carrie cock blocked Dave by not leaving him alone with that really hot girl.
de RJK 8 novembre 2005

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A cardinal sin of "guys night out".
Spicy Ray cock blocked me by telling the bitch I was married with two kids at home.
de Boogie 14 février 2004

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What Harry Potter does everytime he sees Ron and Hermione together
Harry Potter: They Boy Who Cockblocked
de mgemfp208 18 juillet 2011

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To cockblock an individual (usually a male) is a term used to describe the act of someone seeking to stop a person's sexual advances towards someone else. A cockblock or cockblocker is a person who engages in such obstruction or intervention.

cockblocking is a "foul act in which someone interferes with another’s attempt at finding happiness inside someone’s pants"
i couldnt think of 1 lol.... cockblock.
de Ryan......... 14 février 2009

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