1)A room full of men.

2)A gay club or bar.

3)A straight club where the men greatly outnumber the women, as it is with most clubs and you end up standing at the bar with a bunch of men in a sausage line-up, holding a beer while watching the very few women in the club dancing with each other instead of dancing with you, so you end up going home to your Xbox and ordering a pizza.
Lets get the fuck out of this bar, it's a fucking cock locker!

I went to that spiritual seminar last week to see if I could score some pussy, but it turned out to be a a huge cock locker.

Fuck this chat site, it's a goddamned cock locker!
by R.U. Sirius July 31, 2008
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"I wish that bag at the register would shut her cock locker and write the fucking check already."

"She's fucking nasty! - But, Dude! - You could pack a change of clothes in that skank's cock locker."
by Abdev Eurek August 20, 2013
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Someone who locks on to cocks i.e. a gay man.
Hash: Oh yeh HE looks really good today.

Charles: Ahh Hash is such a COCK LOCKER
by jfj91 January 27, 2009
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