Those who have worked in food service know the challenges and difficulties the trade involves. They also know, as patrons, how to conduct themselves at a restaurant. More likely than not, they have observed a few incidences in which an employee at a restaurant -- quite possibly themselves -- has sought revenge on an especially difficult customer by tampering with the food in nasty, nauseating, stomach-churning ways, and they don't want something similar to happen to them.

I've never worked in food service myself. After watching Waiting, I thank my lucky stars for that. It does not appear to be an overly gratifying profession. Strenuous hours. Difficult bosses. Whining customers. Demanding environment. I have, however, been a difficult customer in the past. Waiting has woken me up to the reality of my nature, and the possible consequences I could receive. It goes without saying that my days as an obstinate customer are over.

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