Continuing your slow walk on the treadmill, and now in your new athletic female body, you look for another woman to swap your breasts with. More specifically, you want to swap your breasts for another woman's butt. The idea appealed to you for a variety of reasons, the greatest one being that you simply liked female derriere's and this was a chance to have more than one to play with and admire. You briefly thought abut switching your new ass for your breasts, muscular and pear shaped though it may be, but that would still leave you with your small breasts.
Looking around, you saw a prime target. A positively stunning brunette was doing squats in the free workout area of the gym. She wasn't nearly as muscular as girl's body you had taken, but she made up for it by having a voluptuous figure. She had an hourglass waist, D-cup breasts that jiggled as she worked up, and an ass that was almost as large as her head and jiggled in time with her boobs.
Without a second thought, you swapped with her. Your chest inflated quickly as her butt deflated. Your shirt strained against your chest as two massive orbs grew in place of your small boobs. By the time they had stopped growing, your shirt was just about ready to burst, with the new flesh/cleavage spilling out of the open neck in your shirt. You rubbed the big new booty that resided on your chest, hazarding a guess that if you had to get a bra, you'd likely need a G-cup or larger just to fit around the plump butt on your chest. You wouldn't be needing a bra though, for the butt was also slightly muscular with no sag in it. Pulling on your shirt, you peeked down between your upper asscrack and saw that not only had you taken the pretty brunette's butt, but her butt-hole was situated in the middle of your stolen butt-cheeks.
Giggling at your prize, you looked back at the brunette. She was still doing her exercises, but she now had a noticeable sag in her shorts with the replacement of her large butt with small boobs. Feeling that it wasn't quite right, you swapped the woman again, but with herself this time. Her shorts once more became taught, but only because you had swapped her lower breasts with er original pair, which made a fine replacement for her lost butt.
You left her to her own devices and had to restrain yourself from rubbing the fine ass on your chest as you continued to look for more people to swap.