As you finally set up the random box you were seeing if the display may have been messed with, but it seemed to be functional. You could select and unselect yourself, but you didn't dare go past it for the moment. You did see a new name come up Terra Strange she opened the door to your apartment and called out "Hey Joe, you would not guess what happened at work today."
Feeling a tingle in your nether region you decided to go to the bathroom and said "What did Stacy spill something again?" Hearing Terra go "how does he always know." you left for the bathroom contemplating whether or not you should've also gotten a big gulp after your free magical gadget. Terra however got to the living room and saw what in her mind was your new little toy... A little banged up but it was working. She selected herself along with you and then hit the next button and found a list of things. When she saw "Genitals" she wondered what kinda kinky thing you got and pressed the option. While normally you should be able to select other things before the change the internal damage made the thing automatically go through the change and selecting the end time be a bit further than the heat death of the universe or effectively forever.
Terra feeling something in her groin said "the fuck" and check a small bulge in her panties were. Looking she saw a small penis about 4 inches hard on her crotch. Meanwhile she heard a "THE FUCK!?! TERRA!!!"
In the bathroom a second after you started to piss your dick shrank until only a clit in a hole was left. As you were still standing with no way to direct the stream a mess was made. You leaned in to get most of the piss in the toilet. You then yelled out "JUST DON'T TOUCH ANYTHING, OK TERRA!?!" and then cleaned up the mess. When you got back you told her what it was and what it did, she told you what happened, and you figured out how it was broken. honestly with that malfunction you could live with it.
Terra asked "So how do we get back to normal?"
You said "Well we do it like this..." and pressed the genital button again. Nothing stirred in your groin, but Terra felt her penis shrink back into a vagina.
Terra asked "Then how do we get you back to normal without changing... oh right we can just deselect me." Next roll of the die your groin got really tight as an 11 inch dick. Happy with your current state you and Terra thought about what to do with the random box.