Baz woke up, beside him he was expecting to see his loving boyfriend. Instead he saw a woman that looked exactly like Simon Snow.

What the fuck!?

Baz fell out of bed, the woman still not waking up, then ran into the bathroom, with his phone ready to text his blonde male, when he looked up in the mirror. 
"OH MY FUCKING CROWLEY! SNOW!"

The young woman woke up, and went into the bathroom seeing a beautiful young woman who looked like Baz.
"Who are you?!"
The woman asked, then as if hearing her own voice for the first time gasped, then looked down, to see her clothed body, she looked in her shirt then, with wide eyes rushed to the mirror as well. She screamed:
"WHY AM I A GIRL?!"
The black haired woman quickly realized who the other woman was.
"I was going to ask the same." Baz said leaning against the wall.
"Wait-" the girl said looking at the black haired female.
"B-Baz?"
"No I'm Sherlock. Yes Snow it's me!"
"No need to get moody! I'm as confused about this as you are!"
"Then don't ask stupid questions."

The door opened again revealing a young man with unruly red hair.
He looked at the women, then seeing the curly blonde hair, and the long black hair she sighed.

"Please tell me-" he stopped hearing his own voice.
Simon moved out of the man's way as he looked into the mirror.
"Fuck me." He muttered.
"Bunce please tell this isn't something you did." Baz sighed, ready to beat the older male with the nearest object.
"Of course not!" The male said, then walking out of the bathroom, a few moments later he called the girls  into the kitchen/dining room.

They came out, and saw the red haired man with his purple glasses on, reading a note by the high seated black table.

"Dear reader." Bunce read a loud.
"My potion spilled through the floorboards, and went into your apartment. I'm very sorry for whatever happens the effects are only twenty four hours. I am sorry good day. "
Bunce sighed setting the note down on the table.
"One day shouldn't be too hard right?"
Simon said happily.

Oh how wrong he was.
A few moments later Simon went to the bathroom, and screamed.
"BAZ! PENNY!"
The two rushed into the bathroom to find Simon pointing at his underwear, it was brown, and red.

"I-I'm Bleeding!" The female sobbed out.

Penny, and Baz sighed. In relief, and in annoyance that they had to explain this to the blonde.
"It's a period Simon." Penny said.
Simon gave them a confused look.

No one explained this to him. Ever. There was never a need until now.
Penny came back with a few pads, and a fresh pair of underwear for the freckled girl.

Once the pad was and underwear were on.
Baz and Penny sat Simon on the bed, and began to tell him about periods.
"How come you never ask me to get you pads then?" Simon asked
"It sounds awful to go through."

"Because I'm always well stalked."
Penny sighed.

Simon spent the rest of the day in bed, feeling stupid for not knowing about periods. He-She had the covers over her head, a hole for her face, as she scrolled through  things about girls that guys needed to know. Trying to get himself well educated.

Baz, cuddled with the female, without a blanket, he was nervous about taking the blanket since he had grown up in a home with angry women once they were on their period.

Penny on the other hand, went upstairs asking about the note, demanding an apology from the person who wrote it.

Not just for the incident, but for the fact that they broke into their home in the middle of the night.

Just as promised whendawn hit the skies, the trio was returned to their original state, though Simon admitted that he would miss looking cutter that he originally was.