She would have them swap weights, Beth decided. She set the dial on the Chronivac, pointed it at Tara, and pressed the button.
Almost immediately, Beth noticed changes happening to her own body. She was a pretty chubby girl, with about 180 pounds packed onto her 5'2 frame. Sitting down like this, her breasts were sagging over the paunch of her stomach. Her upper arms were heavy and her thighs touched one another. Her butt was like a huge cushion, and she had a double chin. But none of this for long. Beth felt as though her soft body was quickly tightening up. Her stomach and breasts were shrinking rapidly, and her butt felt as though it was deflating underneath her. And if all that was happening...
She looked up at Tara and noticed that the other girl clearly looked uncomfortable. As Beth watched, Tara reached down into the waistband of her skirt and tried to adjust something, but appeared to suddenly realize that she had big problems. Beth saw that there was already more to Tara's waistline. Her stomach was swelling out, leaving her with the tummy that Beth had had just a moment before. More changes were to come. Tara's formerly perky breasts were sagging visibly under her tank top, and the rest of her upper body was certainly thicker. Her shoulders were rounding out, her neck widening, and her upper arms puffing up as though being inflated. Tara was clearly starting to panic, but no one else in the coffee shop seemed to notice what was going on.
Beth snickered as Tara broke out of line and stumbled over to an empty table. As she sat there frantically examining herself, the changes spread to her lower body and face. Her cheeks puffed up and she developed a sudden double chin, at which she pawed nervously while shifting around uncomfortably in her new seat. Beth knew why. Tara's hips and thighs were quickly bulking up, rounding out to give her an unflattering pear shape underneath her now too-tight panties and skirt. Beth smiled as she observed that her rival's formerly shapely legs now looked like over-stuffed sausages.
The changes seemed to be complete. With the press of a button, Beth had turned her once hot, confident rival into a chubby ball of anxiety.