Declassified Soviet joke courtesy the CIA:
A train bearing Lenin, Stalin, Khrushchev, Brezhnev and Gorbachev stops suddenly when the tracks run out. Each leader applies his own, unique solution. Lenin gathers workers and peasants from miles around and exhorts them to build more track. Stalin shoots the train crew when the train still doesn’t move. Khrushchev rehabilitates the dead crew and orders the tracks behind the train ripped up and relaid in front. Brezhnev pulls down the curtains and rocks back and forth, pretending the train is moving. And Gorbachev calls a rally in front of the locomotive, where he leads a chant: “No tracks! No tracks! No tracks!”