You tried to imagine another change to make in your or someone else's body but nothing happened, you tried again a couple of times but still the watch didn't work. Angela barely turned around her body looking up at you, struggling to say a word, she giggled enjoying having difficulties with your own decision.
"What happened big boy?" She laughed, "What are you trying to do? You can't talk!" Her memory was changed to make her believe that you never had the ability to speak and she did it for you. The thing is this was the first time she saw the watch on your wrist, apparently the watch wasn't affected by reality alterations.
"What is that?" She saw the watch imagining a way to see it closer, maybe switching places with you.
Poof.
In less than a second Angela was the head of the completely naked male body, she looked down appreciating how now your head was the tip of the penis, Angels laughed.
"Hahaha! Look at you!" She kept laughing, "I can't believe this is real!" She moved her new arms and legs getting used to it quickly since she was a former human before but didn't remember anything about it. She moved your wrist (now hers) in front of her eyes examining the watch.
"What is this thing?" The watch showed a message with its LED lights explaining all its functionally to the now woman in control of it. It seemed that since you swapped your vocal cords with her penis form you weren't recognised as a person anymore but a penis, changing the ownership to Angela.
"Interesting..." She tapped twice the watch, "Now that I'm free of that useless and boring body I can do anything I want with this!" She raised her arm, "But first... I will take care of you..." She looked down, putting her hand on your phallic form. "You know how many times I had to go through this?" She began to masturbate you slowly. "God this really feels good, I get why you did it really often. So do I"
She spent many minutes rubbing your penis body with her hand, making you cum, expelling all the white sticky liquid from your mouth leaving a mess on the floor, Angela moaned loudly in excitement.
"Hoof, oof" she tried to recover, "That, was, amazing!" She stood up, "We will play again later" she giggled, putting your underwear on making your vision completely black. "Now I have to make several changes to this body, I want to be more femenine...," She looked a magazine with several pictures of attractive women, Angela focused on their breasts, comparing them to her flat chested male torso. "I know what will be my first swap, I like how the tits look as your balls so I'll leave them there, let's go to see someone outside that will improve our assets" she smiled as she got dressed.