i can't be sure but.... - You’re trying to be polite, but you're really just trying to

You’re trying to be polite, but you're really just trying to make it hurt more when you finally say the real thing.

I can't be sure but... you’re the reason the school got a new principal.

I can't be sure but... your lunch was the cause of the fire alarm.

I can't be sure but... your pet turtle is now a judge in a court case.