1.To Cock Block your friend from talking to or fucking a girl.
2. Preventing someone from getting in a girls pants.
You are at a bar talking to a girl and your friend jumps between the two of you and starts talking to her.

Girls can C-Block guys too by preventing them from getting in their girlfriend pants. Usually by making them leave with them instead of you.

by Notorious JRB June 21, 2006
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Also know as Cock-block. Commonly found at Fraternity party. Person A is talking to hot drunk chick, when his friend Person B comes up, equally as drunk and embarasses person A, to the point where drunk hot chick no longer wants to give up the buns.
"Dude, you cheesehead bastard. Why are u bringing up my sexual ineptitude in public?!? I could have SCORED!"
by CoorsLightEMU April 20, 2003
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Dude, I was hitting on this chick and he c blocked me by showing off his Mercedes. Now she won't talk to me.
by Gavin So Complicated August 17, 2006
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the area in which all the BOOOOOOYS hang out at school, bunch of good cunts there, brotherhood.
Sanjay: you going to kick it at C BLOCK today at lunch bro?
Gulas: of course!
by bartyboy June 02, 2011
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the area of Glen Ridge that is within a blocks distance of carteret park. basically where all the bros live
c block is where all the bros chill
by ChloePowell April 26, 2011
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