Jon went around he house, shutting every window blind to make sure that no one could see in before he started his first experiments. He had found having the body of a giantess somewhat exhilarating, but the size it was was entirely too much to work with. With that thought he decided to try out something smaller, but still giant compared to his normal size. After a half hour of browsing he came upon a picture he liked.
http://lowerrider.deviantart.com/art/Luciane-Escuto-apartment-335253408
With this on his screen he went ahead and tried his first experiment. When he had swapped with the film giantess version of Katy Perry, he found that the body was as large as it was in the film. He wondered if it would work with all bodies just the same. He looked at the image and willed a swap to take place, then looked down. There in place of his regular sized feet were those of the giantess in the picture, but he found a problem when he went to move them. With the added size came the weight, they must have weighed at least sixty pounds each, and his legs weren't strong enough to lift them.
"Unswap" He said. He looked at the picture and tried to figure out what he could do. the it hit him. He willed a swap to take place and looked down again. and there in all it's giant glory was the ass, legs feet and waist of the giantess he swapped with. He lifted his new right leg and brought the foot close, it was almost half as large as his upper half, but he still couldn't get close to it.
"Unswap" he sighed in frustration, his fantasy of having a giant woman's body to play with for a while seemed a little dimmer. Then he had an idea.