I have a 13 year old. I asked him but he claims he hasn't done anything to the bike... I believe him. Unless the bike is attached to a 360 playstation he wouldn't touch it.
I have gas in the tank (i can see the jet squirting gas into the carb (I removed the air filter to spray that thrust into the chamber)), but today I was thinking about getting a gallon of high octane fuel and putting it into the tank.
The battery. I have used it up, charged it up, used it up, and charged it up again in an effort to start the bike, but it's a no go. Unless I am missing something there I don't think it's the battery. The lights are bright and the engine turns, but it doesn't light. I have, on two separate occasions, heard the engine begin to ignite but it never took.