Lucy was the first to choose what she was going to do, she typed into Chronivac. As soon as she finished she hugged Ema from behind and their bodies merged into one. A second pair of breasts grew on Emma as her legs were absorbed by her friend's front legs, and at the same time her head was thrown slightly to the left as the space between her shoulders increased, making room for her head. Lucy, who joined her. Lucy's arms also joined hers, positioning themselves just below hers. In the end Ema and Lucy were a humantaur with two heads and four arms. Alex was their rear and Jeff was still their dick, positioned between their front legs.
"Good idea, now it's my turn." Ema said and put her part for one more change.
Soon the girls started pissing right there, but what came out of their dick wasn't urine, but an absurd amount of precum. At the same time their lower belly, which was originally Alex's, grew and became huge. At the end there was a large puddle of precum on the floor, and this gathered, taking shape and becoming a woman, and this one had four breasts too but did not have a head. The changes continued with the tip of Ema and Lucy's dick becoming a human head, Jeff's head, which was a little different as it had gained more feminine features. They felt a contraction in their lower belly and something large was forced out by their shared pussy, another female body. This new body was pretty much what Alex's was before she merged with her cousin, with the differences being the absence of her head and a horse cock and a heavy ballsack between her legs. To finish, a pair of eyes formed on their buttocks, a tongue formed inside the pussy, as well as formations that performed the same function as teeth in speech.
Jeff and Alex, now having regained the ability to speak, praised the idea, especially after discovering that, even though Ema and Lucy were still the center of their perception, Jeff had control over the woman's body and Alex over the copy of her body with a horse cock.
Jeff was rock hard and throbbing excitedly while Alex was drooling pussy juice. Jeff controlled her headless body, approaching the humantaur Ema/Lucy, and she latched on, coming face-to-face with her pussy and licking it a little before pushing herself inside. She was filled with the strange sensation, feeling penetrated and being penetrated at the same time, all while finding herself in the tight place that was inside herself. Alex also acted on the excitement and took her body behind Ema/Lucy, positioned the horse cock in her pussy/mouth and pushed.
Ema and Lucy just enjoyed themselves, letting their "genitals" guide their little orgy. Ema stimulated their breasts with her hands while Lucy held Jeff's hips with hers. They enjoyed the moment so much that they forgot it had an end, almost being taken by surprise when their orgasm came. The bizarre configuration of bodies meant that their orgasms were, without exception, always at the same time. Jeff loved the feel of the cum traveling through her, coming out of her mouth to fill her own womb. For Alex it was the feeling of having the cum gushing from her horse dick inside her mouth/pussy.
In their post-orgasm stupor, the foursome decided to leave in their new bodies. Jeff and Alex still drooling leftover cum. Their main discussion was what kind of clothes to wear, considering the possibility of going out naked.
In the end they decide to leave...