Undocumented medical condition resulting in chronic foul breath. The stinch resembling that of one who's consumed an extra large shit sandwich. Not to be confused with the garden variety halitosis, assititus has the ability to literally steal your breath away, peel the paint off of walls, and to cling to anyone within talking distance of the sufferer.
Offering a sufferer of assititus a breath mint,Tic-Tac, or gum to subdue the offensive smell is useless, as the result is similar to spraying airfreshner after taking a healthy dump, your left now with the scent of shitty roses or shitty pines...still shitty none the less.
Listerine couldn't put a dent in what's ailing his mouth, he's got a case of assititus.