This is my worst nightmare. As a child, I approached an elderly man and asked if he needed help walking as he had a cane. He proceeded to speak briefly to me, and then peeled back his face from the bottom up like a tin can to reveal blood and sinew.
Oh my gosh, I like looking at gross things but this honestly made me gag. I think it was from me trying to imagine how it felt when he closes it back onto itself. (shudders)