1. When an insult is so bad that it loses its status as an insult, and becomes a reflection of the person who said it's stupidity
2. To brush the salt off something.
1. Guy 1: "You suck more cock then KD Lang!"
Guy 2: *Walks away* "What an idiot, that was a total unsalt."
2. "Whoever salted these chips must be retarded." *brushes salt off chips*