If I don't give tip to waiter in the US?

If I don't give tip to the waiter in the US, what the waiter will think about me?

I was on a date with a woman once. She was paying and paid by credit card so I didn't notice what she left as a tip. The service was fine. Not outstanding. Not bad. I would have left 20%. Which is, in fact, what I always leave for solid, not amazing, not bad service. I am going to guess she either left nothing or she left a very bad tip, because the waiter actually followed us out of the restaurant to confront her. They ended up having an argument on the street. Yes, seriously.

It was extremely embarrassing. I was not impressed by either of them.

So, apparently, you could end up being chased out of the restaurant. More likely, nothing will happen, but the person will curse your name up and down all night long. Remember, in the US, waiters don't make much. They rely on tips. The prices of the meals are lower because the owners of the restaurants don't have to pay the staff as much. Waiters work very hard. It is a lot of standing on your feet, rushing back and forth, and often, getting no appreciation for it. Just tip the waiter.