A person who stops you from getting pussy, a piece of ass or punaner.
Hey thanks for attending my wedding."my friend said.
"Thanks, this was all about thanks? Fuck! Your welcome cockblock! I shouted.
by Snipes ur Ass March 14, 2004
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the infamous act of concealing a friends penis in cheez wiz in sake of being a total douche bag.
Justin Timberlake covered my dick with chees wiz and licked it off.... what a cockblock
by Vagina McVaginastein May 8, 2005
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A move executed by a female during sex to prevent full penetration because the male's cock is too big. The move is executed in almost any sexual position, by the female bringing her arms up, putting her hands on the males waist or thighs and pushing away with her fingers, resulting in the cock reversing its penetration and also preventing any further full thrusts by the male to achieve maximum depth.
"Sylvia had been talking big game about wanting a man with a big cock, but once I started beat'n that pussy up...the cock block came up real quick!"
by Mustafaa Abdallah April 3, 2007
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to block a person's racket during a game of badminton
when playing badminton, a racket is blocked:

Casey: Why the hell did you just cock block me?
by bakerbabexx November 3, 2010
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a kidney stone a literal blocking of fluids exiting the cock
Joe had a major cock block on his hands.
by mriz October 16, 2011
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The act of preventing one from having sexual relations, usually by a jealous friend
Person 1: Did you end up getting with that chick last night?
Person 2: No... you cock blocked me and told her I had herpes remember...
Person 1: Bahahaha
Person 2: You're a dick
by split_allen1 October 11, 2010
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when a male species is doing physical "activity" with a female species .
then the male species friend comes in the room , making them stop their "activities"

then the male friend hits on the female and they do some "activity" making the original male very sad . :(
Fred and Sarah were having some "fun" downstairs in Sarah's bedroom . then Albert decides to come and cock block Fred . Then Sarah leaves with Albert to have "fun" in Albert's mustang . Fred is now sad .
by veryboredrightnow August 28, 2010
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