Nice one, Stasi!! Here's a favourite of mine from the borscht old days (or barszcz in this case):
A political organiser in a Polish factory in the 1970's is despairing over the indifference of his comrades to the great matters of state. One day he rails at them, demanding that they demonstrate their ideological preparedness by giving brief biographies of the senior party members. He asks them to speak about various ministers of State, all of whom his comrades apparently have never heard of. When they purport to know nothing of the career of the head of government he bursts out in exasperation: "You numbskulls!! If you spent less time boozing at home and more time improving your minds at political meetings you'd know who the most important people in our country are and why they're important!"
The ensuing, sullen silence is broken by a worker calling out, "If you're so well-informed, tell us about Krzysztof Novak." The organiser is bewildered. He's never heard of any bigwig with that name. He then suspects that he's being mocked; that this is an imaginary person. "There is no significant person of that name!", he retorts.
"Here is his significance", the worker says; "If you spent more time at home and less time at political meetings...you would know that Novak is the guy who is screwing your wife!"