Speaking of things that aren't. A tip for a restaurant is not legally required. I know this seems obvious to most people, but one restaurant owner learned this when he had a customer arrested for not leaving a large enough tip. According to the story (see the follow-up here), this restaurant requires an 18 percent "gratuity" when serving large parties.
Said customer didn't feel the service received warranted such a large tip and left only 12 percent. The owner, enraged by the small tip, called the police and had the customer arrested.
Upon further reflection, the customer was released without charges as it is not a legal requirement to tip. In other news, restaurants start adding mandatory service charges for treating customers with disrespect.
