When he was little, my brother made up a song called "Goodnight Mabbitgail," it was the funniest thing ever. I think he meant "Abigail."
Also, when I was a baby I talked very early, but sometimes if I forgot a word I would take these mental leaps that baffled my mom. For example, I really wanted apple cider once but couldn't remember what it was called. In my mind, cider sounded like spider, and for some reason that translated into asking for "cobweb juice." I can't believe my mom actually figured out what I was talking about :P