(there's also another one that I remember seeing on g.e-hentai where a women uses a remote to swap body parts with a bimbo colleague and accidentally swaps their intelligence if anyone know of that one too)
I am looking for a comic where a guy starts body modifying his girlfriend (maybe with a remote) and she gets upset and starts doing it to him but keeps his head the same, I think he ends up going to a bar with his new body and maybe his friend stays behind at his apartment and has his body...