Mitch grinned as he rubbed his pretty girlfriend, his hands squeaking her rubbery body. "I know what to do, since it's only fair. I added a donkey tail and ears after you so I had better become inflatable as well, right?" Karissa nodded vigorously, eliciting a storm of squeaks
"I now wish that, I too, would be inflatable just like Karissa!" Mitch said to the amulet. The changes began on Mitch. His skin smoothing into a rubbery-like material, his hair merged into his head and his fingers and toes merged into something like a paw. The changes were quick and Mitch soon looked like a male love doll. Except he had a pair of donkey ears that now stood straight up and rigid and gave a twang when flicked. Mitch's tail was also inflated, but it seemed to have been changed into a curved 'S'. Mitch was glad it wasn't sticking straight out from behind him. That would have been a little awkward.
Mitch giggled, "Wow! This is great!" His voice had changed, it was higher now. Even though he had opened his mouth, no air had come out. He thought that was odd until he remember that he had specified that for Karissa. Air could only go in, until one orgasmed.
Karissa waddled over to Mitch and nuzzled him, their bodies squeaking loudly. For most it would have been grating to hear, but for them the sound of squeaking rubber was becoming erotic. After a few minutes of cuddling, Karissa disengaged herself and awkwardly waddled over to one of her closets and nodded for Mitch to follow.
Mitch followed and after a moment realized she wanted him to open it. He nodded to his donkey-girl and tried to open the door. It took a bit to get his paw-like hands cupped around the door knob. Just as Mitch gets the door opened, Karissa's fat body pushed passed Mitch into the closet and begins to nose around. Mitch stepped back and waited.
A metallic 'clunk' startled Mitch, but Karissa soon began to push something out of the closet with her muzzle. Mitch spots the object, an automatic air compressor used for filling up car tires. Mitch squeaked over and helped Karissa pull the compressor out of the closet. Mitch laughed, knowing what Karissa wanted to do. She was always the one to think of good ideas like that.
Mitch brought the air compressor to the middle of her front room and pushed back all the furniture to give space. Karissa plopped down in the center and opened her mouth to Mitch, wanting to be inflated more. Mitch complied and placed the hose into her mouth. He turned on the compressor to the lowest setting, it was loud, humming and thrumming away as it sucked air in and shot it out into Karissa. Mitch watched and felt his mouth watering as Karissa inflated. It was slow enough that if you weren't careful you'd miss her increase in size.
Mitch was getting pretty hot, so he then decided to...