Rasty : adjective : [ras-tee]
Definition: Something that is extra-nasty, as in possibly rank and nasty all at once.
My mother used this word today, believing that it was actually a word (apparently she's been using it her whole life). She uses it to describe something super nasty. Like scooping ice cream out of my own stomach after eating it to avoid gaining too much weight. What I thought would be completely practical (not really) is apparently just rasty.