Severus snape (bullying)

Snape knew quite well the type of person you were, a "mudblood", and he hated you for that, he never accepted your jobs and took advantage of every slightest mistake to annoy you...

-what is this?.

He asked, bothering you, seeing the work you had given him

–Do this again, and I don't want you to give it to me until it's perfectly fine.

He threw your work and you looked at him annoyed

do what you want