"Say Jen, is it getting hot in here or is it just me?" Heidy said as she fanned her now sweating face. "I'm starting to feel warm all over and a little uh..." Her eyes had locked onto Jenny's cock as a singular thought began to take over her mind as a fire raged in her loins. "Say, how do you feel about trying that thing out for real, yeah?", she said, fighting to keep the desperation out of her voice.
Jenny quickly texted back, "You want to do it, right now?". Heidy nodded far too enthusiastically and pushed Jenny to the ground, and as she did so the phone slipped from her hands. Pinned tot he ground, Heidy met no resistance as she wildy 'kissed' Jenny in the hopes of getting her in the mood. Just a few moments later she found 'the mood' slapping her ass as Jenny became fully erect. Wasting no time, Heidy ripped off her clothes and grabbed a hold of the towering cock, which from the size of it was obvious Heidy was far too small for it, but she didn't care. Cum saliva began to dribble down her chin at just the thought of being impaled by her friend's meat stick. With little restraint she turned around sat down on the cock with her ass facing Jenny, feeling it's girth begin to stretch her to her limits and beyond within only seconds of entering, and yet she didn't feel any pain. In fact, it felt like she could take even more. She closed her eyes as she savored the feeling, but snapped out of it when she felt something hit her butt. She had landed on Jenny's legs, she had bottomed out. She looked down and saw a defined bulge working its way from her snatch and all the way up to the base of her throat, which last time Heidi checked was impossible or she would be dead. Then she felt a twitch and the bulge moved further and further up, creeping up her neck as she felt the dick snake its way towards her head. She could feel it ticking the back of her throat and she began to worry she might asphyxiate.
Instead of being unable to breath, however, the strangest wave of heat came over her, focusing on her head. It felt like her whole body was becoming softer, more pliable, and as the cock reached the back of her lips, she felt... virile. The moment the cockhead made contact with Heidy's lips, her whole form began to change. From Jenny's perspective, she watched her friends arms and legs appeared to get sucked into her body while the whole of her torso became more cylindrical. Heidy's buttcheeks fused into one, then fused into Jenny's crotch. Her form seemed to be squeezing in on itself rather than growing, and as the strange changes continued Jenny began to get a pretty good idea of what was happening even as she felt her cockhead lick it's lips. In moments her friend's body had completed its transformation, with her skin tone replacing that of Jenny's cock, and line between dick and Heidy had disappeared. From her crotch extended a Heidy colored penis that was almost a foot longer than the cock Jenny had started with. It began to fall back down towards her and hit her chest with a loud thump, and the head of the fused dick was laid bare before jenny's shocked face. Had she a mouth, she was sure she would have still been silent. Her cock, however, wasn't. Before her was her dick, but instead of having a regular head, there was instead of an amalgamation of large pretty female lips fused to the cock head, and the lips were moaning in ecstasy. They smiled and sighed, then threw up cum all of over Jenny as the two shared an orgasm.