hella fatt 

A fucking dope ass dude. This dude can't be held down by anything. Hella Fatt is the type of person that intimidates on first impression but is generally a cool ass dude and easy as fuck to get along with.

Hella Fatt is a crazy ass fool.

Hella Fatt is so sweet and cute.

hella fatt by Trill ass nigga dat know October 6, 2016

Hellafart 

Anything that’s bad, especially REALLY BAD.

“Oh man! That leftover cheeseburger from Tuesday night was HELLAFART!”

Hellafart by Lash! September 5, 2019

HellaFat 

Deriving from the ancient Greek words "hell" and "fat", hellafat has become a colloquialism expression of seniority amongst Discord servers. It is a high ranking tag of an elite crew and demands respect.

Woah man check it out, Don is HellaFat

HellaFat by DefinitelyNotDon May 26, 2020

hellafast 

hellafast is pretty damned quick. It's not as fast as stupidfast, but it'll still smoke things that are just "fast". e.g., ASDL is hellafast, compared to a 56K modem.

Man, this rig is hellafast. It beats the hell outta my dual celly rig.

hellafast by djv January 20, 2003

hellafast 

the speed at wich Mr. T's 1982 custom AMC van travels at.

Mr. T's van is "hellafast"

hellafast by Vegas March 24, 2003