36
1)Any person or group of persons interfering with an attempt someone is making to have sex with someone else.
2)The City of Pittsburgh.
3)That twitchy guy who just ruined the mood.
Joe, John, and Harold tried to cock block Steve, but it didn't work.
by Hung Lo May 01, 2003
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37
The act of blocking someone else's cock, by stealing one's chances of getting LAIDDDD!
When Rachel Akiva and Bryan were all at 7-11, Bryan was hoping to get in the sack with Rachel. But evil fat Akiva cock block ed his overtures, and Bryan was left high and dry. And Rachel was not the least bit interested in Akiva's puny cock which was inversely proportional to his immensely troll-like feet.Fuck akiva fuck akiva

by Roochie February 26, 2007
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38
To prevent one's friend from scoring, usually by acting inappropriately in front of some sweet ass.
You're being a total Cock Block, Andy, stop doing blow on the table in front of these fine pieces of ass.
by Aneiz November 25, 2005
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39
A person who blocks the action of a guy trying to make a move on a girl.
**sitting on the couch**

Dave: Hey hallie, your very pretty.
Hallie: why thank you.
*dave leans in to kiss her*
*sarah walks in & sits in the middle of them*
Sarah: hey guys! nice night? yes?
Hallie: WHY ARE YOU COCKBLOCKING?
by hahhahh hallie. April 06, 2009
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40
To interfere with a male's attempt at talking to a female or the other way around, especially if it involves sex. This is mainly performed by obstructing the path between the male and the female. Normally, the person that's doing the "cockblocking," has the intention on talking to the male/female.
BABY MAMA: I'm talking to this guy now name Terrence. He's a nice and comical guy.

BABY DADDY: You gonna have to cut that man off, I don't care if he's nice or not, he better not be in the picture.

BABY MAMA: Oh, now you wanna cockblock for the simple fact that I moved on without your sorry ass.
by Mr. Terrence L. Trezvant April 04, 2008
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41
An ancient Chinese kung fu move which involves a male or a female (hopefully not) whipping out their dick and using it to block a karate chop, hence the name Cock Block. It has the potential to hurt the owner of the dick, but usually ends the fight with the owner of the cock being victorious. This is due to the fact that the other fighter is afraid (usually) of touching the dick, because they don't want to become gay by doing so. If you're fighting a girl.... um i guess you're screwed
Dude 1: Dude I pulled a cock block last night in a fight!

Dude 2: Dude, that's gay.
by Big Chee October 09, 2008
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42
An act of obstructing one person's advances towards another or preventing a person from action, especially sex.
BABY MAMA: I'm talking to this guy now name Terrence. He's a nice and comical guy.

BABY DADDY: You gonna have to cut that man off, I don't care if he's nice or not, he better not be in the picture.

BABY MAMA: Oh, now you wanna cockblock for the simple fact that I moved on without your sorry ass.
by Mr. Terrence L. Trezvant December 02, 2004
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