Fuzz Knuckle 

One who speaks ridiculous obnoxious jibber-jabber, making you want to fiercely smack them and burn their chickens.

Pinky: "WTF?! It rains in the ocean???

Zane: "Dude, shut up fuzz knuckle, or I'll burn your chickens"

Fuzz Knuckle by Fellowship of the Chicken January 19, 2009

Two Knuckle Shuffle 

The Two Knuckle Shuffle is where a man shoves his 2 knuckles all the way up another man's asshole and starts taking his 2 Knuckles and the other man slowley starts clapping.

Whoa that guy is giving him the Two Knuckle Shuffle!

Two Knuckle Shuffle by Nigton3000 December 5, 2018

knuckleball 

The sexual act where you spread your partners rectal flaps with the knuckles of your index and fore finger, then cum with the screwball on a count of two balls and one strike.

The bases were loaded so I slipped her a knuckleball. Garth, she definitely won't be walking home any time soon. Two balls, on strike, and I'm out - she was like WTF!

knuckleball by Lovell from UT November 5, 2010

moose-knuckle 

bearded clam

punani in full effect

moose-knuckle by wendy December 15, 2003

knuckle bump 

To snort a small amount of cocaine from the creases of your knuckle. Usually the most discreet way to snort in public (club, party, street) so that no one will suspect anything.

Ben: Did you see that chick knuckle bump?

Tice: I sure did.

knuckle bump by Nick Bowling Green May 17, 2006

Knuckle Sludge 

Extending one's finger and ramming said digit into the anus until the knuckle reaches the rectum.

Nothing beats reruns of "Welcome Back Kotter" and gettin' the ole' Knuckle Sludge.

Knuckle Sludge by Tony Rosenstein April 6, 2006

knuckle bust

When you forcfully insert your knuckle/s into a person or animal/s to make them "bust" also known as "cucummig like a fire hose"

Derek; Yo cody how was lana lastnight at the party.

Cody; dude you wont believe it I knuckle busted the shit out of her.

Derek; Did she cum like a fire hose?

Cody ; Yeah you fuck stick

Derek ; Fucking sweet bro

Both; Mutual High-Five

knuckle bust by DBodah November 18, 2016