KGB
Place and time: somewhere in the Soviet Union in 1930s.
The phone rings at KGB headquarters.
"Hello?"
"Hello, is this KGB?"
"Yes. What do you want?"
"I'm calling to report my neighbor Yankel Rabinovitz as an enemy of
the State. He is hiding undeclared diamonds in his firewood."
"This will be noted."
Next day, the KGB goons come over to Rabinovitz's house. They
search the shed where the firewood is kept, break every piece
of wood, find no diamonds, swear at Yankel Rabinovitz and
leave.
The phone rings at Rabinovitz's house.
"Hello, Yankel! Did the KGB come?"
"Yes."
"Did they chop your firewood?"
"Yes, they did."
"Okay, now its your turn to call. I need my vegetable patch plowed."