Jeff quickly began to shrink. He saw his girlfriend becoming taller than him and felt his clothes becoming loose.
Jeff noticed that all his body wasn't shrinking at the same speed. His legs and arms were smaller than they should have been, and shrinking faster than the rest of his body. His trousers and underwear fell at his feet. He easily stepped out of his shoes, his feet having the size of a child's feet. He felt a sharp pain in his chest. He wanted to take off his T shirt, but couldn't because of his tiny arms. His girlfriend helped him taking off his T shirt. His head was now level with her crotch. Looking at his aching torso, he saw that his ribcage had somehow disappeared. There was now a little hole in his chest, where his lungs should have been. The hole was slowly expanding.
He collapsed on the floor, his legs now unable to support the weight of his upper body. He laid helpless on the back, while his girlfriend was staring at him fascinated. He felt the remnants of his arms and legs disappear completely inside his torso. His bones melted as he felt his skin becoming harder and leathery. His internal organs gradually disappeared, leaving him literally with a great feeling of emptiness. A black substance engulfed his head, making him deaf and blind. The substance hardened, blackened and took a rectangular shape.
The changes stopped suddenly. He was now a black pump with a four inches heel. His girlfriend took off her left shoe and slipped her foot into Jeff. It was a perfect fit. As soon as he felt her foot inside him, he regained his sight and hearing, being able to see all around him (but mostly upward).
His girlfriend said "So, how does it feel to be a shoe?" Jeff thought that it was not so bad, even if not being able to move was weird. "Don't worry, she answered, you will soon find it interesting " Jeff realized that his girlfriend had just heard his thoughts. "You will be telepathically connected and able to communicate with any person who wear you. I also granted you the power of transforming you, your wearer and your wearer's clothes. By the way, I'd like to have a matching pair of shoes", she said,pointing out her right shoe, a white sneaker.
Jeff concentrated on her right shoe and wished it to become a black pump like him. The shoe immediately darkened, its heel grew and after thirty seconds it was a high heeled pump just like Jeff.
"It works", thought Jeff,"I guess we are going to have some fun now".