"You know..." Liam paused his video game to comment on the spectacle that had just walked into the room, "I think you're enjoying this." He said, turning to his roommate Frank.
"What?" Frank wasn't paying much attention.
"Being a woman. I think you're enjoying it. I mean, look at that dress you're wearing!" Liam was certainly have a hard time not looking at it.
"How dare you!" Frank snapped in a cute, squeaky voice, "I get turned into a woman by an accident at work, and you're trying to tell me I'm enjoying it?! Yeah, I'm wearing a fucking dress, but what the fuck else am I supposed to wear!? None of my old clothes fit, and my boss only gave me so many girl clothes!"
"Your boss, the creepy mad scientist who accidentally injected you with feminizing nanites on your first day? You seriously think he gave you that skimpy dress for no other reason?" Liam glared at his roommate dubiously.
"SKIMPY?!" Frank shouted indignantly, "I'll have you know Professor McGuffin is one of the worlds foremost nanite experts and it is a privilege to work with him! Honestly, the fact that this happened is MORE evidence of how brilliant he is, and how lucky I am to be his assistant! No one else could've made nanites that would transform me this completely in just a few hours! He's working on the reverse nanites right now! He's going to turn me back Monday!" Frank waved his arms about to emphasize how mad he was, but all he really accomplished was making his tits bounce around. "... and I am NOT enjoying this!"
Liam opened his mouth to counter, then closed it and said nothing. He knew what he'd seen last night when Frank had left his bedroom door a crack open...
It had definitely looked like Frank was enjoyining it! Plus Liam was pretty sure Frank's boobs had grown a bit since then, probably the nanites still doing their work.
Liam jerked off to that memory several times over the course of the next week, and at night he swore he sometimes heard moans coming from Frank's room. Liam was fully expecting to let it go and remember it only as a fond, foggy, weird memory until Frank wandered into his bedroom on Sunday night.
"Fuck you." Frank muttered sheepishly, avoiding eye contact.
"Excuse me?" Liam asked, confused.
"Sorry, I mean - I want to fuck you." Frank blushed. "I'm supposed to turn back tomorrow, but before then, I've gotta know..."
"What happened to you hating being a woman?"
"I lied ok? It feels really good. Like weirdly good! Like I keep thinking I've felt as good as it's going to feel, then it feels better. I know I'd be kicking myself forever if I turn back into a guy and don't... you know, feel what being a REAL woman is like..."
Liam didn't need to gloat. What he needed to do was to fuck the hotty he'd been fantasizing about all week.
When Frank moaned and squealed on his cock, it was better than any 'I told you so' ever could have been.
Liam had his doubts the next day when Frank returned home from work still very much a woman, explaining that the nanites had "gone off" and he'd be stuck a woman awhile longer. Liam's doubts about the story increased when Frank went on to say they should have sex again since he was still a woman.
Liam suspected whether the story about the spoiled nanites was bogus or not, "Frankie" was there to stay.