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64.
When someone or something gets in the way of or messes up intentions of performing sexual acts involving your cock.

(From Super Bad)
Me: I was so close, but he totally just cock blocked me.
by tcady123 August 12, 2008
7 3
 
65.
when you are gonna get some, but then something stops you..
getting cock-blocked is when your cock gets blocked from getting any.. ex. my mom walked in on me and stopped me from tappin that
by Alec Mudd July 17, 2008
9 5
 
66.
When a someone you know prevents you from looking good in front of the ladies
Jon Dejesues
aka animegamer
by miguel June 06, 2004
21 17
 
67.
The fastest way to end a friendship.
Nick: Dude, John totally cock blocked me last night. I was trying to get some action but he wouldn't leave the fucking room.
George: Fuck John.
by Juared September 02, 2012
3 0
 
68.
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!
by Jewels49 February 04, 2010
8 5
 
69.
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!"
by Hentsep Renge March 03, 2009
15 12
 
70.
A person who blocks the 'cock' from reaching its intended destination.

Stop being such a cockblock, he's trying to 'bag' her.
by apparentlymyname isbeingusedby January 24, 2009
11 8