Grossnasty 

Grossnasty: The grossest, slimiest, nastiest of any residue or substance either in a bong, or otherwise that brings nausea just at the sight.

"That resin stuck to my fingers looks so grossnasty"

Grossnasty by freniferisland January 9, 2018

grossnasty 

A Word To describe something Tragic yet Gross.

That Girls Hair is GrossNasty

grossnasty by snarkyshark34 February 27, 2009

Grosstastic 

Fantastically gross.
superbly nasty.
phenomenally grotesque...

eww... did you just sneeze on my face? Grosstastic!

Grosstastic by Superdeedzx3 July 7, 2011

gronasty 

Something so disgusting that it is gross and nasty.

“That girls crotch is so gronasty that my dog wouldn’t even hit that.”

gronasty by Baaadass Bitch (Bab) November 30, 2018