One day a Soviet Party member is walking through red square when he hears a man shout “down with the tyrant and his stupid mustache.”
Immediately the party member drags the man to Stalin and explains what he said.
Stalin, furious asks: why did you say that? The man replies he was talking about Hitler.
Stalin listens and decides the man is telling the truth. He agrees with his sentiments and sends the man on his way.
The party member is about to go as well but is stopped by Stalin and asked: "Tell me, comrade, which tyrant with a stupid mustache were you thinking of when you dragged the man here?"