Mr. Fisty 

When you ram your fist into the rectum of another.

Dude, I was with Jessie last night and I slipped her the Mr. Fisty. She screamed like a banshee.

Mr. Fisty by THE Mister Fisty April 30, 2010

Mr. Sister Fister 

Mr. Sister Fister is a middle aged man who puts his finger his sister’s vagina

That man looks like/is a Mr. Sister Fister

Mr. Sister Fister by Hepatitis A January 29, 2018

Mr. Fister 

A man who penetrates other men/women rapidly with his fist.

"Hey look, there's the legendary Mr. Fister. How was last night?"

Mr. Fister by datindianguy10 November 23, 2016

Mr.Slippery Fist 

noun:

1. A mythilogical hero who is known for his slippery fist. It is not known if this fist is in reality covered in a slippery substance or if he is simply agile and is able to "slip" through your defences.

2. What you can affectionately call your fist (if it is lubricated) as it is about to penetrate your victim's orfice.

Rodion: "It is a know fact the Mr.Slippery Fist led a hard childhood. However, after he visited the cave and defeated the demon, he realized that he could do anything he wanted to do, and thus became a great hero of his time."

Joe: "Very intresting..."

Rodion discreetly dips his fist into a jar of vasaline...

Rodion (whispers to his fist): "It's time Mr. Slippery Fist...it is time..."

Rodion (yells): "MR SLIPPERY FIST...ENGAGE!!!"

Joe: "Oh shit...!"

----------------
Alternate Ending

Rodion (yells): "GO GO GADGET MR.SLIPPERY FIST!"

Joe: "Oh shit...!"

Mr.Slippery Fist by Argonak April 11, 2008

Mr. Fist Bump

A derogatory term for a man or woman who is well liked by their teacher, usually the favorite student of the class; this is generally shown by the student and teacher fist bumping.

Person 1: Mr. Teacher really likes me!
Person 2: Shut up Mr. Fist Bump, no one likes you

Mr. Fist Bump by an386833 February 7, 2017

The Fisted Mr. Clean 

When you want to bang a dirty whore and you don't want to stick your fingers inside her, you whip out the rubber gloves and she takes the fist like a trooper!

I had to use the fisted mr. clean on that bitch so her dirty ass juices wouldn't eat the hair off my arms!

The Fisted Mr. Clean by friendsclosenemiescloser July 18, 2006