Hey, I have a black bump on my penis. It started as a normal bump but I picked at it and eventually this black small "stone-like" object came out of it. I am worried about what this may be?

Define stone like object.

I don't think it is serious, in my opinion as a random non-medically trained internet user, but it is something that you should take up with your doctor the next time you see him. It is hard to say what it could be. Since it is your penis I would assume it isn't exposed to the rigors that your hands or feet might. Where it is is an odd place to have something. It could have been a duct that backed up and closed up. I don't know. A doctor would.