What phrases make teachers bite their lip and stop themselves from saying in the classroom?

No sh*t Sherlock!

\”Please try to understand before one of us dies\”

Am I bovver\’d!

He is not the Messiah, he is just a very naughty boy.

What part of \”Shut the f*** up\” don\’t you understand?

I don\’t blame him for hitting you. I\’d be tempted, in his position.

You are getting on my last nerve.

You can\’t be in the Gazelles group because you\’re too thick. You\’re going to be a Warthog for the rest of the year, I\’m afraid.

Stop counting on your bl***y fingers!

For F***\’s sake. Can you really be THAT thick?

If you haven\’t got your PE kit AGAIN you\’re doing it in your knickers and vest.

Compliments of TES