Shop owners always come across furious customer who thinks he or she is way too smart to get things done their own way. A Reddit user named FredFltStn is a seasonal fireworks tent or shop owner and he posts interesting stories about his customers and work. One such story narrates how he and his father were faced with a furious customer who was an armchair lawyer guy boasts of knowing all his rights when one his purchases is rung in at a wrong price. Read what the shop owner did and how the customer learnt his lesson. Share your views on this story with us. (S)