Knucklefust

-noun
A fist bump of awesomeness and encouragement.
-verb (without an object)
The act of fist bumping to show excitement or achievement. To take part in a fist bump with another person for their excitement or achievement.
-verb (with an object)
To tap a person or object encouragingly with your fist.

Other interpretations.
Can also be considered snide or suggestive in the rigght context.

And he gently knucklefusted him on the shoulder to let him know he did well.

by TheBlueSalmon July 29, 2011

Knucklebutting

The act of inserting multiple fingers at least second knuckle deep into your partners rectum, optimally by surprise. Often done during fellatio or cunnilingus.

Sabrina is great at knucklebutting, she can get third knuckle deep before you even notice.

by SasquatchSB October 5, 2010

Knucklebuster

One who likes to work on his own shit yo. One who likes to have split knuckles with blood and greese all over his/her hands. Like to say take a muffler off yo with a hammer and chisel and a cut off saw at 3:00 in the morning while the neighbors sleep. Knucklebusta yo

Like when your taking off a rusty U-clamp bolt from a muffler with a ratchet and you apply full force and the bolt snaps off forcing your hand full force into a jagged rusty piece of metal on the frame or some shit.

by Bloody Knuckles April 24, 2003

Pearl Knuckleduster

When a man ejaculates onto his first before punching his partner in the face with the be-seamened hand!

The bitch was complaining about my rough treatment of her, so I gave her the ol' pearl knuckleduster!

by boofstien May 31, 2012

knucklebutt

A girl who is so skinny, most likely from anorexia, that when she wears a bikini you can see the bones of her pelvis move around in her ass when she walks because she has almost no butt cheeks.

"Danm! Someone tell that knucklebutt bitch to get some meat on her!"

by Joe July 27, 2003

Knucklebuster

Blood and grease motha fucka

by White Bulger June 27, 2003

KnuckleDunker

When undergoing intercourse, your hands will be represented as the famous basketball. It is up to the opposite partner(s) to decide which given “hole” is the basketball hoop

Im looking forward to a good knuckledunker in my ass

by PenisPenisPenisPenisNigger April 19, 2020