Originally Posted by dereksbicycles
I think once or twice. I must have been in bad mood that night.
I never ever give $1 tip in my entire life at restaurants. Even if it's a bad service, you should never ever tip like that ever again. never. Just tip 10% if service was bad.
Normal tip is 15%. I typically tip a little more than 15% for overall good service and 20% for restaurant I frequent to.