turn the key 

Start somebody's motor by cranking on their shaft (a.k.a., penis shaft)

She really knows how to turn the key. I got hard instantaneously.

turn the key by 128 pounds of fat chick September 10, 2009

Turn The Key 

A sexual act performed when you are fucking a girl doggy and while fucking, you suck your thumb briefly then stick your thumb up the girls ass with your nail facing down towards her pussy and then turn your hand 90 degrees.

Yo, Stacy told me to turn the key last night and it really turned her on to the point she was gushing all up on me.

Turn The Key by TheGuanchillian December 30, 2023