As Jon gently inserted the large dildo into his anus, he could feel a slight tingling coming from his hands. And then the dildo simply slipped out of his hand and did exactly as he wished: The dildo fucked him without him having to even guide it. And it felt amazing.
Jon was so lost in the throes of passion, the dildo pumping in and out of him on its own power, that he didn't notice any of the changes happening to him. His hair was growing, as was his chest. With each thrust, Jon was becoming more and more a woman. The final change occurred when the dildo itself transferred to Jon's incredibly wet vagina.
Jon was loving the new sensations, but barely registered that they were new. He felt like this could go forever and he'd never get tired of it.