One of the senior nurses guided the now svelte, 100 pound woman into a wheelchair and pushed her out of the room. They had post procedure tests and check-ups to run on her, and they'd be back for Mark in a while, so the remaining nurses knew they had time.
The X-Fer machine was a new technology that had been privately developed and tested at this hospital alone, but all of the nurses were quite familiar with it, since they had been paid extra to receive training and help with the tests. Each of them could set up and operate the machine by themselves, and the words of the chubbier nurse rang true.
The hot nurse watched as their supervisor left, "...Okay, so maybe just a few pounds.. But nothing drastic, okay? If they noticed he's grown bigger and we're all miraculously slimmer, they'll catch us for sure." The chubby nurse nodded, putting on her best serious face, "Okay, just a few pounds. We'll even be careful to spread it around so it doesn't seem so obvious." she added as several more nurses gathered around Mark and the X-Fer machine, whispering to each other about what they'd want to get rid of.
One by one the set up the machine, forgoing anesthesia to get this done before they get caught. A few pounds off a muffin top, a couple ounces from some puffy lips, a bit from a bloated behind, one nurse even opted to take some weight off her chest, complaining that she'd been outgrowing her bras lately. This only made things worse for Mark, whose body was already overstuffed and fattened up in the most girlish way possible, but not with softer cheeks and plusher lips, his masculine features were completely hidden beneath about 170 pounds of female curves. His once firm chest was now occupied by a pair of lovely, and quite large breasts. Were he awake, he'd be embarrassed to death to see his nipples poking erect against the taut fabric of the hospital clothes or his now enormous "white girl booty" which barely fit into the pajama pants they had him wedged into.
Once everyone had their turn they swore to secrecy on the matter and quickly cleared out, leaving the chubby nurse to finish prepping mark for his room. The chubby nurse pensively looked over at the X-Fer machine, pondering just a little more.. She was so tired of being known as the chubby nurse, and this could be her free pass to being the brunette nurse, or the Nurse with glasses. She looked down at Mark and how much he already resembled a fat girl, now. He was supposed to remain sedated for at least 12 hours after being on the receiving end of the machine, according to the manual, so it's not like she didn't have time. He was already so big, a few more pounds wouldn't hurt.. But the other nurses would know..