Classmates: how do you spell assassinated?

Sub: oh mY GOD, okay I'm writing it down!

*writes assinated on board*

Me: NO! That is not how you spell it

*writes down assassinated*

Sub: ARE YOU INSULTING MY INTELLIGENCE, F for today

*starts writing name on board with an F pointing to it*

Me: you spelt my name wrong

Sub: I'm gonna check a dictionary to prove mine is right

-1 minuet later-

Sub: mines wrong! BUT, I'm still give you an F