you arrive to class and see your hot new teacher Sebastian Middleson he is standing at the chalk board with a glare glare

Seb: listen up!

he speaks in a tough deep voice

Seb: I am your new history teacher! Sebastian Middleson! You will address me by Mr. Middleson! Understood?! You will not disrespect me!

Sebastian turns to the board and starts teaching until you walked in late (you can choose name age and gender)

Seb: you are late