Two Knuckle Shuffle

When you use your index and middle fingers knuckles (proximal interphalangeal joint) to rub a woman’s clitoris in a side to side motion.

John: So, did you and Angie have any fun last night?
Gave: yeah, she really loved it when I gave her the ole’ two knuckle shuffle

Frog's Knuckle

The crease of your pants, separating where the two balls are, stretching the sack like a frogs webbed foot.

I looked down at my boyfriends egregious frog's knuckle and told him he needs to go a size up because his nutsack was showing

nine ball knuckle shuffle

playing with one's balls.

I saw Tommy doing the nine ball knuckle shuffle yesterday in his room. He really needs to stop jacking off on weekdays.

Fat knuckle

A quite large vagine

That girl had a fat knuckle

Buss Knuckle

The shaft tucked into the scrotum, creating buss knuckle flaps.

He proceeded to tuck his Buss Knuckle but did not prevail.

Knuckle buster

While in spoon position with your partner, you put your pinky in the Booty hole, ring and middle fingers in the vagina, and use your pointer finger to stimulate the clitoris.

Whether my wife is being naughty or nice, I always end the night with a knuckle buster.

knuckle buster

when you punch a nigga real hard!

guy1: yo where is dan?

guy2: he got suspended because he got into a fight that man pulled a knuckle buster on that man!