here in Brazil we have restaurants called Churrascarias (like a steak house)
In addition to buffet food, the waiters come to your table with all kinds of meats in the universe all the time and you pay only a fixed price for everything.
On the table you have a two color disk, one side is green and the other is red. So, when you don't want to eat for a while you leave the red disk facing up and the waiters will no longer serve you.
Are you ready to eat more? place the green disk face up and have fun (you can eat infinitely if you want)
It's great, you go out rolling xD