1. an exclamation conveying
anger at a person who just did that thing that made you angry, usually
said by pussies who are afraid of cussing.
2. sometimes used to describe a
jerk
Guy 1: (takes your bag and throws it in the trash)
Guy 2: Aw, stupid!
Kid 1: My girlfriend just cheated on me.
Kid 2: She's so goddamn stupid.
Kid 3: What a jerk.