Some more muscle would allow Mary to stand. With several grunts of effort, Mary managed to get off her ass and onto her knees. With her new height, she was able to reach the case and began to scroll through the options. However, even just being on her knees was taking a lot out of Mary. Her legs screamed in protest at the enormous weight put on them, and her torso was getting tired, causing her upper body to slowly sag downward as she turned the dial. Finally, she found muscle and cheered before resting.
She flopped onto the ground to catch her breath, but her fall didn’t just send ripples through her body. It shook the case, making the dial turn. After a few minutes, Mary prepared herself and launched herself upwards to press the dispense button. The vial popped out and Mary returned to the ground with her spoils. A cocky grin on her face, she laughed in victory as she drank the serum.
This one tasted salty and she could almost smell a musky scent coming from the vial as she drank it. Her smile faded as the feeling she expected never arrived. She had anticipated a tingling over her entire body like when she grew taller, but this growth seemed to be coming from her crotch. Mary tried to see what was happening but her gigantic boobs blocked her line of sight. The feeling she was getting came in pulses and seemed to be spreading. Not inward, but outward. It was going away from her center before subsiding. Mary swallowed a lump in her throat. She had an idea of what had happened, but wasn’t yet brave enough to confirm it. She could feel something resting atop her thighs.
Biting her lip, she gingerly reached a hand down for a physical inspection. Yup, that’s a penis. Mary had given herself a dick. It was small, only about 3” and slightly thicker than her thumb. Reaching further, Mary found no scrotum but was relieved when she found her vagina intact. Separating her cleavage with both hands, Mary finally laid eyes on the unexpected growth. It was kinda cute. She flexed it as best she could and watched it jump at her command. While it was an accident, she didn’t hate her uninvited guest, which seemed odd. Mary never wanted a penis, but now that she had one, she couldn’t really think of a reason to get rid of it. Maybe she could keep it. Or maybe…