In poker an extreme form of tilt that can be produced by taking an exceptionally bad beat. The implication is that a player receiving such a bad beat will be so emotionally disturbed that they will play recklessly for the rest of their lives (permanent + tilt). While no unambiguous examples of the phenomenon have ever been reported the term is frequently used to indicate extreme emotional distress at the poker table.
"I get all-in versus this donkey with AA and flop quads. He's playing The Kat and runner-runners his miracle cards to make a straight flush. I've been on permatilt ever since."
Someone who just looks "dirty" or "dingy" no matter how many showers they take. They have this lingeringdirty look to them. Yellow teeth, discolored skin.. frizzy hair. Usually a woman that has had sex with alot of guys or a guy who has had sex with alot of girls or a tweaker. Basically a ratchet usually contains some degree of permafilth.
Dan was looking a little permafilth with the meth binge.
Look sandy has been ran through so many times, she just looks permafilth.
I.e. a druggie, someone who carries stds, or a ratchet.