Sentience in a seed-pod

I've always liked Alanis Morissette. I like her songs, and her lyrics, and I don't find her whiney. And I think she's smart. And pretty. Anyway, ever since I saw some young comedian (I think he was Irish) rip the song 'Ironic' to shreds in an admittedly hilarious diatribe, I've been meaning to rebuff him and other critics. But I didn't and this guy beat me to it.
Although now I think he's being a bit harsh on the critics too. The meaning of irony includes the often quoted definition which in longhand looks like:

A condition of affairs or events of a character opposite to what was, or might naturally be, expected; a contradictory outcome of events as though in mockery of the promise and fitness of things.
– Oxford English Dictionary (1st edition, c. 1900)

I'd like to paraphrase this as 'something unexpected happens', or more correctly, 'something really unexpected happens'. And if that's the case, what is or isn't irony is determined by what the observer expects, isn't it? Whatever fluid board of decision makers determines the 'fitness of things' at the time also sways the tarnished edge of the irony sword. So the critics can have their examples of irony just as Alanis can, as long as they can convince me they expected the natural course of things to turn out differently.
Play nice, children.