Picking up Stevens package, you unwrapped it with excitment, curious to see the gift that you had been given. After struggling with the package for a minute, you open it up to reveal a sexy red thong. It was mostly transparent except for the crotch, and was very lacy and smooth. It looked a too big for his body as well, but he figured he should try it on. After undressing himself, he pulled the thing up to his crotch, holding the edges and getting a bit damp at the fact they were almost flat against his crotch. Suddenly, his body rumbled, and a deep pulsing warmth filled his hips. Groaning, Dave felt the orgasmic thumping against his hips, thumping in tune with your heart.
Thump thump, thump thump, thump thump.
His hands fell to his aides as his hips expanded slowly into the sides of the thong, holding it up for him. Placing a hand on his crotch, he rubbed himself, moaning as his hips filled with soft feminine fat. The throb eventually subsided, and Dave sighed. Looking into the mirror in the corner, he could see his now massive hips jutting outward, past his shoulders. Just as he was about to comment on his lack of butt, the warmth returned, throbbing into his being. Letting out a long moan, Dave squeezed his slowly ripening ass. It was becoming rounder and smoother, bigger and softer, he squeezed his cheeks as they grew into massive piles of flesh on his back, trapping the back of the thing firmly between his cheeks. Caressing his womanly buttocks, he wondered what would happen next.