Another restaurant receipt has gone viral, but this one has a happier story behind it than the last one. The King family of Washington state went out for pizza and discovered to their surprise that the restaurant gave them a $4 discount on the receipt for "well behaved kids." (They have three, ages 2, 3, and 8.) A friend posted the receipt to Reddit, and it quickly became an Internet hit, reports Today.com. Sogno di Vino's owner says he often gives free dessert to families with non-bratty kids, as he did with the Kings, but this is the first time he typed it out on a bill. One of mom's tips: No eating out if the youngest kids haven't napped.