Stupid me was BBMing while trying to plug in my headphones with my pheripherals, and I accidentally pushed it (not very hard) into the USB port. The tip of the headphone jack connected with the little connector ball at the bottom of the USB port. The screen went black and I instantly hit the power button on instinct, so I don't know if it shut off. Did I do something very bad, or is that normal? I'm not sure if that's even considered an electric shock or what.