Crotch Nazi 

A higher form of a cockblock. A friend who never allows you to have sex. Ever.

John: Alright, I'm gonna get some tonight!!
Dave: Achtung!!
John: Oh, shit, the Crotch Nazi's here!

Crotch Nazi by Mick Jagger's Lover June 13, 2007

crotchazilla 

A special kind of alligator
A term used by gay men to signify their readiness for anal
Teachers should know this term so they can help students get some @Wadsie

"Look at that Crotchazilla, Ryan"
"I thought you were straight, Zach!"

crotchazilla by AmericanFlagSunglasses@Orlando June 7, 2016