One day when I was trying to spit out the word "catastrophe", it got tangled up in my brain with the word "apocalypse", and what came out of my mouth was the word "apostrophe".
I have a real problem with spoonerisms, malapropisms, and similar linguistic slips. But I like the word apostrophe, and it struck me as a neat and slightly surreal condensation of the words apocalypse and catastrophe. And, I ask you: what is an apocalypse, if not surreal?
As for why I was trying to spit out the word catastrophe in the first place - well, because that's where I think we as a species are headed: for a full-blown apocalyptic catastrophe. And it bothers me.