double diamond 

A double diamond is a gay man who was conceived via c-section, never in his life touching a vagina.

Mark: Man, how could you have never wanted to touch a vagina? It's deadly!

Todd: Ahh... I'm a double diamond.

double diamond by Jrkd January 28, 2016

Double Black Diamond 

While skiing with your partner, have them skiing backwards between your skis. With sufficient momentum, have your partner crouch down and proceed to provide oral stimulation of the genitals. Like the sexual acts namesake, this move is for experts only.

Me and my girlfriend successfully pulled off the Double Black Diamond, making the snow a lot stickier for skiers behind us.

Double Black Diamond by skipatrol69 January 15, 2013