Mary and her twin sister Brandy had shared a rather taboo fetish since they had been young teens; watching movies such as Species 2 and Xtro. Watching those young women swell, their bellies grow so round until they burst had stirred something unexplainable in the two young women, something they enjoyed sharing together. So at the ripe young age of thirteen the two began experimenting; exploring ways to fill their bellies until they felt as if they would pop. Water and food worked to a point but food only made them sick and water was to hard to hold inside them safely so they turned to air.
