Why IS a raven like a writing desk?

I dunno why I keep circling back to Alice. I don't even like the book. I haven't even read Through the Looking Glass. I couldn't tell you how often she shrinks or what happens in the scene with the gryphon and the mock turtle--something about reciting poetry, I'm guessing. I committed "Jabberwocky" to memory in the sixth grade, so if I make a reference, it's a good bet that that's where it's coming from.

I'm an Alice poser. That's me.

But I like it all the same. Probably because it can be interpreted in so many ways. And by many ways, I mean dark ways.