CockBlock 

A buddy that is pure repulsive to the ladies to the extent that his presence prevents you from getting any action.

"I hate going out with George, he is such a CockBlock!"

"I was just talking to a gang of hotties who were gagging for my cock and then George came over and and they all said they had to catch a taxi. I was practically guaranteed some tang, George is such a CockBlock man!"

CockBlock by Hentsep Renge March 3, 2009

Cockblock 

The ex that hangs around so your not likely to get any.

John just kept on hanging around, killing any chance of getting laid by Peter...John was such a cockblock!

Cockblock by Jewels49 February 4, 2010

cockblock 

This is the act of a good male friend (or sometimes a boyfriend) moving closer to a female friend of his or even dancing with her so that a sketchy, unknown man does not start to get too close. This act is often performed in crowds (ie. clubs).

Often times, if there are more than a 1:1 ratio of guys to girls, a single guy may have to cockblock for many of his female friends/companions.

This is usually appreciated by the female, who generally thanks the male in the cab ride back.

That sketchy guy was hitting on my friend so I had to act like her boyfriend, thus cockblocking that sketchy guy from grindin on my friend!

cockblock by Amaan August 22, 2005

cockblock 

to be blocked while trying to get some action

while i was running my game on sam, rotunda jones( her fat friend) tried to cockblock me

cockblock by Mr 1 derful December 9, 2008

cockblock 

to get in the way of 'play'.

Hey ugly third-wheel person, don't cockblock.

cockblock by noelle April 22, 2003

cockblock 

1. Originally applied to males. Any act blocking the pursuits of another through alphamale/dominant/dickish behavior.

Originally observed and defined in Moore Hall, 4th Floor, College Station Texas while watching a porn. A male actor was lining up his approach on a female actress in doggy style scene when Peter North pushed the lesser known actor out of the way and took "pole" position for himself. Henceforth this was known as the "cockblock". The term has grown from there.

I got totally cockblocked at that orgy on Saturday and ended up with a dwarf exchange student.

cockblock by rockit88 April 10, 2010

cockblock 

The art of blocking the cock. (also known as cockstoper)

Sis! Why did you cockblock/cockstop me by coming into the room, while Jessica was giving me head?

cockblock by IRPimp May 21, 2004