Invisibility...

If I were invisible I would scare people to make them think that they were going insane. They would think they were hearing voices. I would go everywhere that I go when I am visible just to see if it would be different when I'm invisible. I would eat food just to see if it would be visible like on Casper, or just go straight through you. You could go home without your parents knowing you were there, and take a nap if you want to without having them bothering you about cleaning. The disadvantage would be forgetting you were invisible. Another, disadvantage would be that you could still feel pain.