ANDY'S ANSWER: Well, I would try and let it heal before I aggravated it any further. If you don't want to wait for it to heal, wearing a condom while masturbating will help protect the skin from further injury. In the future, use some lubrication. The shower is a great place to masturbate and soap makes a good lubricant. Other than that, maybe a little petroleum jelly would help keep the skin on your penis intact.