A post at reddit asked the question "What is the creepiest thing your young child has ever said to you?" There are over 12,000 responses! And more are being added even now. Buzzfeed culled some of the weirdest to present to you, including a couple that hint at reincarnation. If you are intrigued by them, you might want to go back and check out the original thread for more creepiness. Link
See more about baby and kids at NeatoBambino
Also, when my little brother was 4 I went to go to bed and he was standing at the top of the stairs, looking at me. I asked him what was wrong and he responded with "Nothing, the man just wanted me to tell you to get the doll out of your room. He says it wants to eat your eyes." Of course, I immediately got rid of my china doll (that always seemed to move on it's own but I never paid any attention to it).
Please protect me from your followers.
"Oh, sorry, Josh, I don't believe in that stuff." (I was tired!)
Well, about 3 minutes later the kid's dad, a long-haired, tatooed, Born-Again Christian biker dude, comes kicking down my door, screaming that he's trying to teach his son about the Lord's ways, and he doesn't need me trying to corrupt him.
I've never been so afraid for my life.