by InFaMouS March 28, 2003
Get the cockblockermug. When you're hanging out with a girl, and one of your friends tries their hardest to split you and the girl up as a joke. This makes your friend a cockblock.
Clayton: Hey so do you maybe wanna-
Colton: LET'S GET OUT OF HERE DUDE!
*The girl Clayton is talking to leaves.
Clayton: Thanks cockblock.
Colton: LET'S GET OUT OF HERE DUDE!
*The girl Clayton is talking to leaves.
Clayton: Thanks cockblock.
by Benqueedo Man October 21, 2016
Get the Cockblockmug. When you are attempting to get close to a girl and your buddy won't leave the room or starts telling less than flattering stories of you that cause you to lose an opportunity with your new female acquaintance.
Sara was sitting on the couch in the living room, Eric had been talking with her all evening, the party was over, Eric was attempting to get close to Sara but David wouldn't leave the living room even though he kept nodding off.
by Eric December 7, 2004
Get the Cockblockmug. 
The male definition of cockblocker is to sabatoge another guys chance of scoring with a chick. This concept was foreign to me until going out on occasion with my college roommates friends.
While one guy was is the bathroom, another guy would tell whatever girl was there things like... its a shame he has been unemployed for 3 years..... rough deal with that restraining order.... he doesn't pay his child support for his 4 kids........he is changing his colostomy bag...it wasn't his fault he caught herpes..... Stuff to that effect.. The girls wouldn't say anything when the guy comes out of the bathroom, the guy of course doesn't score.. then they never even tell the guy that was in the bathroom what they said to the girls.....
Shit is reprehensible..
While one guy was is the bathroom, another guy would tell whatever girl was there things like... its a shame he has been unemployed for 3 years..... rough deal with that restraining order.... he doesn't pay his child support for his 4 kids........he is changing his colostomy bag...it wasn't his fault he caught herpes..... Stuff to that effect.. The girls wouldn't say anything when the guy comes out of the bathroom, the guy of course doesn't score.. then they never even tell the guy that was in the bathroom what they said to the girls.....
Shit is reprehensible..
Steve was a cockblocker when he told the bartender Paul was out on parole when he was in the shitter
by teabag September 25, 2007
Get the cockblockermug. Someone who takes or makes themselves obstacles in your way of you getting some action or a person you like or want.
Person 1: I really like Don, do you think I can get him?
Person 2: Mmm... probably but I just smashed him yesterday, sorry.
Person 1: Oh my gosh, you knew I liked him! You're such a cockblocker!!
Person 2: Mmm... probably but I just smashed him yesterday, sorry.
Person 1: Oh my gosh, you knew I liked him! You're such a cockblocker!!
by Corina Annetta April 12, 2011
Get the Cockblockermug. by cassia;) May 12, 2009
Get the Cockblockermug.