It's an oldie.

Hey, Carl - you fell asleep half way through that movie. Do you want to know how it ended? Sure, Dad - what happened after I fell asleep? Well, the pilot of the Violet Unicorn lost an eye in an accident. That sucks. He was supposed to fly all of those people home from that desert island. He could still fly them home in the Violet Unicorn - even with the one eye! Do you know why? I'm going to regret this, aren't I? He was a one-eyed, one-horned, flying purple people freighter! *sigh* Nobody remembers that song, Dad.