Spoon. Ing?

I had this random thought, about digging a hole into my arm. Not too sure where in the hell it came from, but it sounds interesting.
I mean, wouldn't it be interesting if your mind could manipulate your body in such a way that it can make your skin so fragile that you could take something so simple as a spoon, and just dig a hole, right in the very center of your forearm?
Just a thought.