Derived from the word decent, dec is another word for awesome. You can add prefixes and sufixes to dec to make it mean better or worse than it is. Dec as hell!!= really fucking awesome. Pretty dec=not to bad.
Your pretty dec at basketball, or katie is dec as hell.
during hot weather, when it's so sweltering that even the heat of one's own hair becomes unbearable, causing temporary insanity that leads one to believe that shaving their head is the only solution.
Napoleon Dynamite: Why do you got your hood on like that?
Pedro: Well, when I came home from school my head started to get really hot. So I drank some cold water, but it didn't do nothing. So I laid in the bathtub for a while, but then I realized that it was my hair that was making my head hot. So I went into my kitchen and I shaved it all off. I don't want anyone to see.