Every now and then, my gums will become sore, and just "peel" off. I can literally move the skin around with my tongue until it comes off. This happens with certain foods, and after certain things I do. It only affects the upper gums, on the inside, right next to the toothline, and sometimes on the roof. Visibly it becomes red, and bleeds some. Tonight at work I was cleaning some stuff at work, and snuck in a quick chicken nugget.