Jeff decides to get his dad's sex doll out. He types in the chronivac that he will trade mouths with the toy. As he presses enter, he feels a tingling on his mouth and rushes to the mirror.
He brings the doll with him as the tingling got stronger. Jeff made it to the mirror and is mesmerized by the changes. His lips slowly lighten in color, while the doll's lips slowly darken. His lips stop at a shade a hot pink, while the doll has human colored lips. Then Jeff looks inside his mouth to see his teeth shrinking away with his tongue. Jeff feels a chocking sensation as his throat closes up, becoming a fleshy sack.
Jeff reaches a finger down the dolls mouth, only for in to go deep down its new throat with no end in touch. He the feels the tingling return, and looks in the mirror to see the insides turning into an artificial look. He reaches in his mouth as the plastic coats all of it, and as he feels it, its devoid of moisture and it squeaks.
He watches as his lips open into a perfect "O" shape on their own, and thin into a cheap looking, pink, plastic ring. He cant move it at all, but touching his lips sent him into a lustful daze. Jeff was so distracted on his own mouth that he didn't notice until now that the doll was whispering. He tried to ask but realized that he lost his vocal cords and the doll now has it. The doll whipsered in his voice, "Ahh, this feels so good, Master. Please do more."