After struggling for several minutes to find a way to release himself from the gaff Jon finally decided that the easiest way to get it off was to just wish it off. He picked up the rock and said simply "I wish I wasn't wearing a gaff."
After being forced to look away he felt the constriction in his crotch fade away. He looked down and was surprised to see that it looked like the gaff hadn't disappeared at all. "Stupid rock." Jon muttered tossing it onto his bed so he would have both hands free to work on removing the concealing device.
Jon was shocked when his hands reached his groin and didn't encountered the gaff as he had expected. Instead what his hands wear feeling was real human skin. His skin. It seemed the gaff hadn't disappeared when he wish he wasn't wearing it; it had become a part of him.
A little further exploration proved to Jon that not only did he not have his normal male genitals but he didn't have female genitals either. He was now completely genderless at least as far as his groin was concerned.