1. One who socially gets between one or more potential couples.  2. A male who prevents another from getting laid by socially getting in the way.
1.  I was right about to ask for her number, and then your cockblocking ass had to tell your stupid drunk story.
2. I was about to take her home, and then you had to make the remark about the old cheeseburger under the seat in my car, you damn cockblocker!
2. I was about to take her home, and then you had to make the remark about the old cheeseburger under the seat in my car, you damn cockblocker!
by theunknowngl October 16, 2004
 Get the cockblockermug.
Get the cockblockermug. by OnE LoVe August 10, 2003
 Get the cockblockermug.
Get the cockblockermug. Originally meaning when a person is about to engage in sexual activity and a person (family member, friend, child etc.) stops any chance of doing so. This can also be applied to any day to day non-sexual activity. Such as going out with friends, smoking bud, etc.
"Dude, I was guna get some ass, but then her best friend, who I think is a dyke and totally has a crush on her, cockblocked me."
"Fuck man, we were going to the movies, but then my mom cockblocked me."
"Fuck man, we were going to the movies, but then my mom cockblocked me."
by pistolpetee January 7, 2010
 Get the Cockblockedmug.
Get the Cockblockedmug. A guy/girl, especialy friend or family who intentionately or not stops you from getting laid...it can be done by phone, visiting, etc.
I was about to lose my virginity, when a Maniac friend of mine called to ask if i was watching T.V. Because of that cockblocker I missed my chance...
by I-Maniac February 9, 2007
 Get the cockblockermug.
Get the cockblockermug. I WAS ABOUT TO BANG THE HELL OUT OF MY FAT SISTERS HOT ASS FRIEND , WHEN THE COCKBLOCKER,MY BROTHER CAME INTO THE ROOM , AND TURNED US BOTH OFF.
NEXT TIME HE DOES THAT I WILL DUCK TAPE HIM UP AND THROW HIM IN THE SHED OUTSIDE IN AN OLD BOX. =
NEXT TIME HE DOES THAT I WILL DUCK TAPE HIM UP AND THROW HIM IN THE SHED OUTSIDE IN AN OLD BOX. =
by NIKKI JOSEPH LAROUSSE June 10, 2009
 Get the COCKBLOCKERmug.
Get the COCKBLOCKERmug. John was about to go home with some hot blonde until her fat friend cockblocked him and went home with her instead to eat candy bars and watch the Tyra Banks show
by TheFrost  February 25, 2007
 Get the cockblockmug.
Get the cockblockmug. by Meandmybaby June 29, 2011
 Get the CockBlockermug.
Get the CockBlockermug.