someone who prevents a guy from using his dick to satisfy a woman
That fuckin cockblocker wouldn't leave Tom's house last night when he was anxiously awaiting to fuck Sarah.
by Katie S. March 20, 2006

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Someone who takes or makes themselves obstacles in your way of you getting some action or a person you like or want.
Person 1: I really like Don, do you think I can get him?

Person 2: Mmm... probably but I just smashed him yesterday, sorry.

Person 1: Oh my gosh, you knew I liked him! You're such a cockblocker!!
by Corina Annetta March 14, 2011

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when someone interupts you before or during sexual intercouse.
omg trent is the biggest cock blocker i was about to get in
by j.mac-z@suckonit.com July 15, 2009

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Someone who prevents other people from having sex.
nick powell is the biggest cockblocker alive.
by cassia;) May 12, 2009

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Street term for the female contraceptive device otherwise known as a diaphragm.
Paulina was impregnated by Joe because she forgot to put her cock blocker in that night.
by Robert Polack May 01, 2008

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A person who has unnatural tendencies to stop sexual encounters before they begin.
Terrible. Some chick cockblocker screwed me big time
by Meandmybaby June 27, 2011

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Someone who blocks cock.
The guy was about to stick his cock into the fine-ass bitch when the Cock blocker came out of no where and side shoved the guys cock.
by Cock Blocking 101 October 10, 2009

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The Urban Dictionary T-Shirt

Soft and offensive. Just like you.

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The Urban Dictionary T-Shirt

Smooth, soft, slim fit American Apparel shirt. Custom printed. 100% fine jersey cotton, except for heather grey (90% cotton).

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