Jon decided to go down to the beach. It was a lovely summers day, and there were plenty of holidaymakers sunning themselves and relaxing on the sands. But first, to find a couple of "victims".
Jon heard, rather than saw, his first choice for swapping. A muscle bound hunk was trying to impress a group of sexy females, and not succeeding. Jon thought of a swap and looked. The muscle-bound hunk was wearing a skimpy yellow bikini, and as a bonus, the well-endowed lady next to him was now wearing nothing but a pair of baggy trunks!
Jon sniggered to himself, as the swaps went unnoticed by both members. But now for something a little more kinky. He swapped the clothes back, and the lower halves at the same time. Now the bodybuilder had a woman's body from the waist down, and the woman the other way round, with musclebound legs.
Now for something else. He saw Tracey, being chatted up by that idiot Greg. Greg seemed to think that he was god's gift to women, even though he was only Jon's age. He had always fancied Tracey, but had been too shy to do anything about it. But first Greg. Jon's imagination and warped sense of humour got the better of him. By the time he had finished, Greg had his arms where his legs whould be and his legs where his arms should be. He had swapped his penis with his nose, and given him the hair of a young girl, tied in pigtails. Greg didn't notice and didn't stop trying to chat Tracey up.
Now for Tracey. He reached for the stone in his pocket. "I wish..."