Crotch Knuckles

The hard roundish mass contained in a male mamal's scrotum. Generally found 2 to a sack. Testicles.

I noticed the lump after she cracked my Crotch Knuckles

crotch knuckle

A term for a woman's clitoris. Because of its location in between the legs, it almost resembles a knuckle on a hand in between two fingers.

I got her off by rubbing her crotch knuckle.