You try to stop it, but your bladder begins emptying itself into the new pull-ups.
Without thinking, you look back at the mirror and gasp. Your reflection has changed. Instead of the skirt and pull-ups, your teenage self is wearing what looks to be a thick pair diapers with prints of Barney the Dinosaur on the front. Sure enough, as you look at yourself, your outfit begins changing, the pull-ups turning into a fresh and dry diaper.
Suddenly, all the mirrors around you vanish, and the door to the outside opens. before you can react, you feel an unseen force push you outside into the open, the door shutting immediately behind you.