You enter a store or market-stand, say, cloths and fabrics. You have a look around, they show you a few cloths and other items. Then you say thank you and walk away without buying anything. They look in disbelief, amazement, and bewildered as of why you did not buy anything, as if there is something wrong with their merchandise. Happened to me many times in Sri Lanka.               Leaves you kind of with a guilty feeling.