get rektorn
When you want to say get rekt to your principal/headmaster, you can use this term. Stems from the Swedish/Germanic languages.
Friend 1: Man, I fucking hate our fucking principal!
Principal: What did you say about me child?
Friend 2: He's/she's right! Get rektorn!!!!!!
Principal: What did you say about me child?
Friend 2: He's/she's right! Get rektorn!!!!!!