The hot summer sun beat down on Megan's shoulders as she adjusted her red one-piece swimsuit and climbed the lifeguard stand. Despite the heat, a shiver ran through her as the expander implants in her breasts shifted with each movement. When the pharmaceutical company had approached her about testing their new expiremental adjustable implant, it had seemed like easy money. But now, after the first unexpected inflation a week ago, Megan was starting to have doubts.
She settled into her seat, grimacing as the heavy weight of her suddenly enlarged breasts pulled at her neck and shoulders. The implants had doubled in size overnight, stretching her swimsuit to its limits and leaving angry red marks on her skin. Megan glanced around self-consciously, feeling exposed by her newly bulging cleavage and exaggerated proportions. A few kids splashed in the shallow end, while some of the suburban moms laid out on towels whispered and stared.
Megan sighed, wishing she could hide but knowing she needed the money from this trial. She tried to focus on scanning the water rather than dwelling on her breasts. But suddenly, a now-familiar tingle bloomed beneath her skin. Megan gasped, grabbing the sides of the lifeguard stand in a white-knuckled grip as the implants swelled again, inflating rapidly under the straining lycra of her swimsuit. She was helpless, clenching her jaw against the discomfort as they grew fuller and heavier on her petite frame.
When it was over, Megan hesitantly looked down at her new shape. Her breasts had expanded to the size of over-inflated beach balls, swallowing up her ribs and stretching the swimsuit fabric tissue-thin. The straps dug furrows into her shoulders under their impossible weight, and she could feel the implants wobbling with every subtle movement. Megan's pulse raced, scared and exhilarated by her outrageous new figure. This expander trial was getting out of hand, but part of her thrilled at the awed stares of the pool-goers, despite her terror at what the implants might do next. She was at their mercy now, however big they decided to get.