You gasp at the knocking on the door. You look down at your newly rounded hips and reversed gender as woman at the door continues knocking. You pull your pants and boxers back up and walk awkwardly to the door, both due to your shoes and pants now being several sizes to big for you but also because you've got an entirely now center of gravity to contend with. You throw open the door to the restroom, which now that you're done changing opens normally. A woman is standing there dressed very much like a typical tourist. She gazes back at you expectantly as you stand there in the threshold of the door.
"I'm a woman." you say to her your voice filled with panic and confusion. She looks at you as though you were crazy.
"Congratulations, are you done?" she asks.
"No...I mean, a few moments ago I was..." you stop. Do you really want to tell this woman what happened? She's a guest, it's not like she'd know how to help you. You suddenly realize that the bathroom itself is one of those onezie restrooms where only one person can use it at a time, and right now you're blocking the door. All these thoughts bewilder you and you put your hand up to your, now, totally unfamiliar face "I'm confused." You say aloud more to yourself then her.
"Look, figure out your identity issues later, either pee or get off the pot." she says to you. You walk past her and back out into the zoo area. She mutters something and enters the ladies room, locking the door behind her. You find a bench nearby and try to gather your wits. After several minutes of stammering confusedly you mange to collect yourself enough to go over the events of the last few moments. You entered the ladies room, the door locked behind you, and you turned into a woman. The idea strikes you that if you perhaps if you, as a woman, entered the gents room you'd turn into a man again, but first you'll have to do something about your clothes. You tighten your belt, but it only helps so much. You end up having to punch a few makeshift holes in it with your keys, probably not good for them but that's the least of your worries. You then look at your shoes. They're way to big for your feet now. You tighten them as much as possible and that helps you walk, but they're still fairly loose. You look around and see a few racks with flyers advertising various features of the zoo. One explaining the restrooms would have been nice, you think to yourself, but maybe this can come in handy. You grab a few of them and walk back to the bench, stuffing your shoes full of them to help them fit your feet better. You look up to see a child pointing at you and asking his mother what the silly lady is doing. The child's mother pulls his wrist and tells him not to stare.
Sighing you walk back towards the restrooms that changed you, making your way around the other end of the building where the gentleman's rooms are. As though you needed more proof that this zoo exists in some odd parallel dimension, you realize that there's a line for the men's room, but none for the women's. Looking like a madwoman comes lower on your list of worries than the possibility of becoming male again so you get in line behind a man in his late twenties, with unkempt brown hair and a Hawaiian shirt over a t-shirt sold by the zoo. You lean against the wall with arms crossed, drumming your fingers impatiently against your arm. The man looks at you strangely for a few minutes.
"Uhh...this is the line to the men's room." he says.
"I know." you say curtly. He looks confused and turns back to the line. After a few minutes he turns back to you.
"Why are you-." he begins.
"Don't ask." you say to him. He shrugs and turns back to the line. After a few more men exit the restroom he turns back to you again.
"So do you live around her-"
"Don't even think about it." You say to him. He shrugs again and turns back to the front of the line. After what seems like an eternity of waiting, during which an almost identical conversation happens with a guy who gets in line behind you, it's finally your turn. You walk into the men's room and close the door behind you, waiting for whatever happened to you before to happen again.