a typical tarof in the streets of Iran...
"A Canadian journalist went into a store to buy a hat. The journalist went to pay for it, but the shopkeeper said, "Be my guest," indicating that the hat was a gift. The journalist insisted he should pay, but the shopkeeper insisted he should not. The journalist thanked the shopkeeper and left. A few minutes later, a policeman grabbed the journalist as a thief. The shopkeeper had turned him in."