An old lady called up the police department and got a policeman sent to her address. She told him, "Officer, there's a man exposing himself in the building next to mine!"
The concerned officer said, "Where is he, lady?"
"Right over there! He's still shamelessly baring himself!"
The officer couldn't tell where she was pointing. "I'm sorry, but I still can't see a naked man over there."

The old lady pulled him over to her window. "Oh, you have to look through this telescope."