A modern day moral tale

Last week I gave an employee a coupon, which I had been given, for a $2 grande cold beverage at Starbucks. He proceeded to try to determine the most expensive drink he could order to maximize the coupon. He returned from his trip to the coffee shop with his receipt in hand telling me that he had ordered a 13 shot, venti, soy, hazelnut, vanilla, cinammon, white mocha, with extra white mocha, caramel beverage. The total price of the drink was $11.50. He was upset that they did not honor the coupon by giving him that drink for $2. I was not surprised that he had to pay for such a crazy order, especially when he ordered the wrong drink size (venti rather than grande). I was however rather dumbfounded that he even attempted such a strategy. He said the drink tasted terrible, and after he had drunk just a little from the top his hands were visibly shaking. I told him he couldn't finish the drink on the job because I wanted him to be able to think clearly. So, I retell this tale because it is so outrageous and because it illustrates a moral lesson. Don't try to take advantage of someone else's goodwill. You will probably end up paying for it in the end, and the other party will be less likely to offer their benevolence again.