Swap his mouth with his pussy

He wonders what he could do when a messed up thought enters his head. What if he swapped his pussy and mouth around? He grabbed his device and began to imagine the very idea. A tingling sensation engulfed him as his face became tighter. He opened his eyes and stared into the mirror.

His mouth had been replaced with his sister's pussy and his mouth was now down in his crotch region. "It worked?" He said, the voice coming from down below. He decided to try out whether they both still worked. He grabbed a cup of the side and filled it with water before holding it near his crotch. He opened his mouth, a sensation that felt natural, and began to the drink the water. A fair amount was spilled, he needed to get used to his new body.

He then moved to his face and gently touched his pussy mouth. A sensation rang through his head, sending orgasmic sensations to his brain. It felt natural. He pushed his fingers deeper, feeling his way inside his head. He felt his womb tucked away, probably at the top of his chest rather than at the bottom. He then picked up his toothbrush and inserted it into his pussy, pretending to brush his teeth, the bristles brushing against his clitoris. Suddenly, he jerks forward as he reaches his climax, thick cum comes flying from his face into the mirror.

That was amazing. He had never felt anything like that before. He picks up the device once again. How could he take this further?