Petia

“I shall destroy capitalism! Do you hear! I shall destroy every single capitalist! And I shall start with you, you dog, if you don't help us with the bomb!'
Allan noted that the had managed to be both a rat and a dog in the course of a minute or so. And that Stalin was being rather inconsistent, because now he wanted to use Allan's services after all.
But Allan wasn't going to sit there and listen to this abuse any longer. He had come to Moscow to help them out, not to be shouted at. Stalin would have to manage on his own.
'I've been thinking,' said Allan.
'What,' said Stalin angrily.
'Why don't you shave off that moustache?'
With that the dinner was over, because the interpreter fainted.”
― Jonas Jonasson, The Hundred-Year-Old Man Who Climbed Out of the Window and Disappeared