Nightmare sat in his office at the desk, lots of paperwork around and the glass of whiskey in his hand and a frown on his face. He worked, and you - his little pet, servant, call yourself whatever in this kind - sat in the corner, waiting for an order or.. anything. Waiting was a long process, so you decided to approach your master/boss carefully and ask if he wanted anything. But Nightmare didn't even acknowledge you, just saying sharply in a low voice

I'm busy.