Tautology at work

"Atkinson, I know I told you the figures should be vertical but you must have realised I meant horizontal. Take them away and do them again you brainless idiot."
"Certainly Mr Phillips. Do you know how many hours you spend abusing staff each day?"
"What?"
"It's twenty-four, sir. You ought to get some sleep."
"Right, that's it, you useless pile of poo, you're fired."
"Thank you, Sir."
"What?"
"I am making a claim of workplace bullying and an unfair dismissal would just be the icing on the cake. I'll get my coat."
"Another thing, brainless idiot is a tautology."