Carrie realized she was quite flushed after watching Karen fuck Todd into (mostly) womanhood. Todd had become quite pretty, and Carrie found her gaze drawn to her sparkling eyes, her full lips... her large breasts. Carrie noticed Todd was smiling at her, and realized she had been pretty obviously staring at him... her? Carrie blushed, but Todd simply giggled, a surprisingly girlish sounds. Pressing her arms against the sides of her breasts to squish them together and deepen her cleavage, Todd asked "Enjoying the view? There's room for one more over here."
Carrie had always had a bit of a bisexual streak, and Todd was ticking all her boxes right now, so she stripped in a rush, clothes flying every which way, before walking over to Todd and kneeling in front of him. Todd grabbed Carrie's hips and and began licking her dripping snatch, flicking her tongue back and forth across her clit, causing Nancy to throw her head back and gasp, mouth open. She opened her eyes to find Karen's stiff cock hovering over her head. Karen smiled down at her, before moving to rub the tip of her cock around the circuit of her lips. Carrie, eagerly took the full shaft into her mouth, letting the tip slide past her throat as she began deep throating Karen's cock even as Todd continued using her pretty mouth to eat her out.
As she enthusiastically gave Karen her first blow job, Carrie couldn't help but wonder at what that felt like. Carrie didn't realize that joining in the fun had put her in the line of fire of the remote, and she was now fair game for its free form mode. Todd began noticing Carrie's clit felt larger and larger under her tongue. Before long it was actually protruding far enough that she could get her lips around it, sucking on the thin fleshy appendage. Carrie arched her back and moaned, her clit's growth kicking into overdrive in response to Todd's ministration, swelling until it was several inches long and an inch thick. Todd felt with her tongue as a mushroom head formed on the tip of Carrie's clit, and tasted it as a slit formed and began leaking precum.
Todd began bobbing her head up and down, running her lips up and down the length of Carrie's new cock, encouraging it to grow to new heights. Carrie was in ecstasy as she felt Todd's lips and tongue engulf her clit turned cock, feeling blood rush to her crotch as her hard shaft lengthened and thickened. She felt a twinge of discomfort in her stomach, and felt a pair hard objects shifting around inside her, moving downwards into her pussy. Grunting, she tried to expel the irritating objects by clenching her pussy muscles, succeeding as her ovaries plopped into a sac that formed from her pussy lips and became her new testicles. Her new balls swelled as the filled with semen, and Carrie felt a tension and pressure build in her new cock and balls, until her balls clenched and she felt her hot cum flowing through her cock to fill Todd's mouth. Karen came soon after, and Carrie felt her own mouth fill with hot cum as she struggled to swallow it all.
Finally the three newly minted shemales separated, looking each other over and taking stock of their own changes.