There was an episode of SpongeBob SquarePants that never aired. No, it doesn't have any gore or anything like that, it's just a picture of a crying SpongeBob at the beginning and a bunch of clips from other episodes. However, the animator who made it was found dead at the next morning with his lungs ripped out. It looked like a professional had done it.
They say if you watch the episode in a certain way, you can make a wish come true. Start watching the episode. When it gets to a clip from the episode "I Was A Teenage Gary", close your eyes and make your wish. The episode will start playing at slow-motion and you will feel pain in your chest for 30 seconds. In two days, your wish will come true.
However, you must never watch a brand new episode of SpongeBob SquarePants. Go ahead, watch as many reruns as you want. But if you ever watch a brand new one, you will be found with your lungs ripped out just like the animator, and any finger prints found will be those of the dead animator.