This is the coolest trick since I learned about the “quick 20% tip on your tab” method. Take the total bill, move the decimal point one place over to the left, then multiply it by 2 to get 20% gratuity. I will sometimes round down on the change to make it closer to 18%. Also I only really need to do this when I’m drunk and can’t maths.

Why would you multiply by 2? 10% is a good tip.

As long as wages are supplemented by customers, the restaurant industry will never pay their employees a fair wage.

I don’t like tip culture either, but I’m not going to stiff the guy making federal minimum wage.

If I’m drunk and having a good time, 20% seems fair to me. You can pay whatever you think is fair, I’m not passing judgement on that account.