>> but when you go out to dinner, what is it? new york city in particular but across the bored. what is acceptable and good and where do you start to get offensive? >> i think 20% is the standered. i generally tip between 20 and 30%, depending on what or where i'm at. if it's an 18 check and not that out landish to leave 40 on the table. >> i do the same. i leave 20%. easy to calculate. and then if it's breakfast and the bill is very inexpensive, i leave more. >> yeah, it's got to be pretty spectacularly bad service for me to go below 20% and people should know the biggest sin is taking out on the floor staff or a waiter your unhappiness with the kitchen. so that's, don't do that. >> that said, when is the last time you got bad service? >> i don't get bad service anywhere and i'll tell you why. let me tell you why.