What you said is still a little unclear. You said that the guests drank a lot of wine, so did your hairy crabs serve before or after drinking? Because before drinking, guests will definitely see the price written on the card. If you do, it's hard to say. Secondly, there is something wrong with you. As the guest said, if the price of hairy crabs is not on the menu, you should tell the guest the price of hairy crabs when ordering. But from what you said, the guests were generous and drank a lot. Is he drunk or not? A drunk person can say that there is something wrong with the bill. This is an alcoholic. A sober person says so. This is a person who has nothing to find fault with.