fist bumping 

A totally dumb way people greet each other,showing how douche baggy they really are .as in I will be thumbed down by every gay fist bumper on the net .

Gilbert tried his best to fit in by fist bumping every Tom,Dick and Harry in the party .

fist bumping by blastinU November 2, 2014

Fist bumping 

When you start fisting a girl in her pussy and then, with your other free hand, start fisting her up the asshole until your two hands meet inside her resulting in a "fist bump"

Yo bro i was fist bumping my girl last week, I felt my knuckles touch inside her

Fist bumping by fistbumper420 August 20, 2022

Fist-Bumping 

A signal that an individual is sexually attracted to another.

I was fist-bumping Sally so she got the message.

Fist-Bumping by Etchabetch November 6, 2015