I've had mine pierced since July 4, 2001. It didn't hurt that bad, just felt like a severe pinch on my tongue and mine didn't swell up that bad either. Everyone is different. I ate Burger King the next day. Also, you HAVE to rinse you mouth out after every time you eat, drink, or smoke. I carried a small water bottle filled with Listerine around with me. It was gross but I didn't have any problems with infections or anything!
My boyfriend has had his pierced for 6 or so years as well.
