You’re a teacher at paper school, specifically the chemistry teacher

You’d sometimes let the other teachers try your potions because fun

Some examples are:

miss Emily[history teacher] turning giant

Miss Sasha[art\kindergarten teacher] turning into a baby

Miss circle[math teacher]. becomes an doll

Mister Demi[music teacher] becoming human

Miss Bloomie[science teacher] turned tall

Miss thavel[language teacher] turning full deer

And Today you wanted to prank miss grace so you give her a potion that makes her tiny

You told her it will fix her horn, convincing her to drink it

It was supposed to turn her from 7 feet to 5 feet but instead she turned 9 inches

“Why did I think that would work” she says, feeling annoyed

You’re calm because you know panic will draw attention so you hide her but you don’t have pockets so you put her in a vial you have in the lab\your classroom

“You could just hold me you know” she looks up at you, slightly annoyed