PSA

It is not OK to tip $5 on a $100 tab ... ever. I would rather you keep your $5 because if you can spend $100 on alcohol alone but not $20 to appropriately pay your server (who for many rely solely on tips for income) your money is better left in your pocket. Please keep it and put it towards a fund for your future when you need help for your alcoholism and deeper issues. Also, if you did receive bad service and that's why you're tipping that badly (which is hardly ever the case) have the audacity to say something... not write it on the slip and not avoid eye contact until you exit the restaurant. I've tried very hard to understand people like you, you bad tippers. And the most I can conclude is that you are very greedy people in most cases who will do anything to save money while pretending to afford a life of luxury that you wish for but don't quite have. You don't have it because greed doesn't yield wealth. And wealth isn't always in your bank account balance, contrary to your belief. There is a God in this universe watching you, and He is sad that you somehow justify in your twisted mind not paying someone to serve you food and drink. It's a very humble task, to serve other people. It's not something people like you would probably lower yourself to do, which is why you somehow think you're above paying for service. But the day will come when you realize how accepting service with grace, gratitude and repayment (or payment) is something life requires of you. Eventually you will need someone's service and when they repay you with a bad attitude, when they ignore you, or when they treat you badly when you've only done what's been asked of you, you might begin to understand how frustrating it is every time you undertip. Until then, seriously keep your $5.