A statement uttered after the revelation of an exceedingly ironic fact. (Based on Steve Buscemi's statement in Con Air, "Define Irony: A bunch of idiots dancing on a plane to a song made famous by a band that died in a plane crash."
Person 1: Dude, did you hear DJ AM died of a drug overdose?
Person 2: No! Thats crazy!
Person 1: Yeah, and he had just signed a contract with MTV to host a reality show doing interventions for teenagers with drug problems, showing how people can turn their lives around.
Person 2: Wow. Define Irony.