Irony

Answer me this: what in the hec is irony? `Cause I don't get it. Pathetic, isn't it? I know.
But it still confuses me. Like the concept of the universe being an ever expanding ball of matter, zillions of times bigger than earth. And it's all made up of a gazillion-zillion-million microscopic atoms!

Anyway,

irony's always confused me, but most of the time you here it on T.V., like when I heard it on Spongebob Squarepants. But I don't care. It's not like I really need to know what irony is.