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.

Knucklefust by TheBlueSalmon July 29, 2011

Knucklecopter 

A sex move in which you fist your partner while rotating your wrist rapidly

"Man, I hate the Knucklecopter,"

"Don't knock it 'till you try it, bro"

Knucklecopter by LocalGuru October 8, 2017

knucklemuff 

The act of being punched in the vagina or butt.

You've been knucklemuffed!

knucklemuff by Illinoisblackie April 28, 2019

knuckles.exe

Knuckles the Echidna is a protagonist in Sonic.exe: Nightmare Beginning and Sonic.exe: Nightmare Beginning Remake, and an antagonist in Sally.exe Continued Nightmare and Sally.exe Continued Nightmare: Eye of Three. He is voiced by DarkBox.

Knuckles.Exe knuckles.exe is weird looking

knuckles.exe by Α September 18, 2021

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 Knuckles by Oh Shit February 8, 2008

Mountaineers Knuckles 

Can also be found next to the word 'gnarly' in the dictionary.

The act of a male ejaculating into a females face while she sleeps then throwing a handful of his recently shaven ass hair into her face and letting it dry.

Out of nowhere, Mike decided to give me Mountaineers Knuckles last night.

or

I gave her the messiest Mountaineers Knuckles, it was awesome.

Mountaineers Knuckles by Fuckayooo1123 February 19, 2010

Tommy Knuckles 

A general phrase that can be used to describe someone extremely awesome or certifiably nuts. Used frequently in the northern midwest.

Hey, you know that guy Mike?

Yeah, that dude is a total Tommy Knuckles.

Tommy Knuckles by dndgamer May 1, 2010