A word indicating that a joke, namely sarcasm, just occurred. Derived from the phrase "ah, you thought" -- if said in a rushed manner, a sentential-onomatopoeia is revealed: "ah-da."
Person 1: Hey, guess what?
Person 2: What?
Person 1: I'm going to write my dissertation on the plausibility of cloning dinosaurs.
Person 2: ...
Person 1: Auda!
Person 2: Man, I'm gonna sock you.
Person 2: What?
Person 1: I'm going to write my dissertation on the plausibility of cloning dinosaurs.
Person 2: ...
Person 1: Auda!
Person 2: Man, I'm gonna sock you.
by a Logician in training July 27, 2009