1. To be unreasonably angry at simple matters.
2. Annoyed easily by things that are temporary or unimportant.
Ex 1. Jane became supadiastic over the fact that John wore T-Shirts at his business instead of suits like all her friends.
Ex 2. It was almost unbelievable that Mark was so supadiastic; simply because Peter took all the Yellow M&Ms from the bowls at the house party (note: the host was quite fine with it).