cockblocker

noun

1. (slang, vulgar)One who cockblocks; one who impedes the sexual advances of another, usually a man.

   “If you spread the story you're Leslie's old man, and somebody finds out you're not climbing in her back pocket, you'll find out that ten times worse than being the greasiest stoolie in the world is being a jailhouse cock-blocker.”

   “"What do you think of Nova?" "Well ... I guess you could say he's a cockblocker." "Shep, we don't use words like cockblocker." "Fine, then he's a ... chiseler."”

   “He signaled for me to come over, but I was no cockblocker or third party, so I didn't move.”

   “Why are those on the cockblocker bandwagon so desperate to keep these two chaps from getting it on with one another either atop the Edwardian rug or in the Technicolor-ish hay?”

   “Tell you what, I'll take one for the team and charm the cockblocker, and you can have your pick.”