In the Big Texan Motel part of the The Big Texan Steak Ranch. Here can you eat a 72 ounce steak. If your entire meal (the 72 ounce steak, roll, butter, salad, shrimp cocktail) is finished you will be refunded.
See here for the rules.
Tonight I was a bit tired, but tomorrow I will enter the 72oz steak contest.