Starting with body fat...

"Alright let's do this." Jenna said extending her hand towards Josh. Josh took hold of her hand and began to concentrate. "Remember, body fat. Body.... Fat..." Jenna said.

After 3 seconds of concentration Josh felt the room pulse around him. His entire body began to tingle causing him to pull back his hand and shiver. It felt like millions of ants were crawling across his skin. Then he began to feel a tightness throughout his body. It felt like his skin was too tight. Josh looked down to see his belly begin to take on Jenna's fat, but it wasn't just his belly. His pecks were swelling with female breast fat and his ass was piling on Jenna's former junk in her trunk. Josh grabbed a handful of belly fat as he collapsed into a chair.

While Josh was fattening up, Jenna body was rapidly thinning. Her large breasts were dwindling and her chubby arms were toning up. "Josh." Jenna said in a sexual tone. "This is amazing." She said as she continued to shed the pounds. Josh just ignored Jenna, he was too focused on his rapidly fattening body.

After about a minute of fattening and thinning the changes had finished. Josh gingerly stood up from his chair and began to inspect his new body. "This is bizarre." Josh thought as he cupped his breasts. He was still very much a man, but all of his fat was deposited like he was a fat woman. He had large fat tits, wide womanly hips, and a fat saggy ass. Josh looked over at Jenna. He was shocked to see her new body mannish body. She wasn't what you would call skinny, but she definitely wasn't fat anymore. "My god..." Josh thought as he looked her over. Jenna now had the build of a short, but in shape man.

"Looks like you need to hit the gym chubby." Jenna said as she reached out and jiggled Josh's breast.

"Stop it." He said as he pulled away from her. "That isn't funny..." Josh pouted.

"Fine let's get to work on the plan." Jenna pulled out a piece of paper with 3 names on it. "I have three targets for the body fat swap. Kelly Jones, Ami Burns, and Megan Tolliver." Josh was visibly confused as to why there were 3 people. "O come now Josh. Why would I only target one bitch when I could punish three bitches?" Jenna smiled. "The order is important here. Each one will get a bit more body fat than they had before. That way all three get a bit of punishment instead of really fattening up a single target."

For reference:

Pre-swap Josh: 6'1" - 185lbs
Post-swap Josh: 6'1" - 260lbs
Pre-swap Jenna: 5'4" - 225lbs
Post-swap Jenna: 5'4" - 150lbs