A friend of mine just had an interesting thing happen to him the other day. He went out to eat at a buffet with his girlfriend. They were seated, given drinks, and had their plates taken away once while they were there. After they finish their meal, my friend's girlfriend tells him he has to tip. He said, "Well, they didn't really do anything besides bring us water when we got here, but that's fine I guess." So he puts down two bucks on like a $16 dollar check, but his girlfriend says he needs to tip a full twenty percent like normal, and nags him until he does.