cock blockula 

a social vampire of sorts. a guy who is so desperate to have sex that he will do anything within his power to make sure that you don't.

Man, I was at the bar the other night getting ready to take Susan home, when all of a sudden Ron, the "Cock Blockula" steps in with a story about his dog dying!

cock blockula by bradlay July 4, 2008

Cockblockula 

Someone who at every chance sucks up all the game in the room at his friends expence.

John: Aye there were like 100 girls at that last night, did you get any action?

Ryan: Not at all Gary was being such a Cockblockula! Dude he totally kicked off the Cockblocalypse.

Cockblockula by P.S. Foolish June 13, 2011

Count Cockblockula

def.when your girlfriend finds the men or boys in the Twilight saga more titillating than you.

opening night of eclipse i wanted to go out to an extremely epic/sexy dinner date and i got Count Cockblockula'd into watching this stooooooopid movie. Needless to say i had to put my blue balls to bed early.

Count Cockblockula by theprovidence December 7, 2010