OK, but the story I was talking about (and the one I'm pretty sure sinisterlink was referencing) was "It's a good life" by Jerome Bixby, which was also turned into an episode of The Twilight Zone. You can read the short story here. It's about a kid who has God-like telekinetic/telepathic/teleporting/tele-whatever powers, and inflicts horrible punishments on people any time they're not being "nice".