https://en.wikipedia.org/wiki/Russian_political_jokes
>The CIA wanted to send a spy to the Soviet Union and the spy that was selected had incredible qualifications. He was fluent in Russian, had perfect Cyrillic handwriting, had a vast knowledge of Soviet culture and mannerisms, could cook typical Soviet meals, and could keep up his act with a belly full of vodka. The mission was long-term infiltration of the Kremlin. The spy was dropped in a remote village where he approached a man and said, in perfect Russian, "Hello comrade, can you please tell me which direction is Moscow?" The man looked at him, and walked inside. Within minutes, the KGB was swarming the village and arresting the spy. While being interrogated, the KGB officials said "Quit the act, we know you are an American spy." The spy was baffled they (especially the man in the village) were able to tell so quickly, but tried to keep up the act for as long as he could. When he finally cracked, he said "Alright, alright, I'm a spy. I will tell you whatever you want, but please just tell me how you knew I was a spy because I devoted my whole life to perfecting my Soviet character." The official said "You're black."