If you can’t afford to tip, stay home, or go to McDonald’s or a liquor store.
Good rule of thumb: If you can hear your tip hit the bar/counter/table, you’re a cheapass.
Don’t think it’s okay to not tip your bartender because you only got a Coke. It took more time to pack the ice and pour the Coke than it would have to open a beer.
The bill/tab is for the food and/or beverage. The tip is for delivery.
Random thoughts from a previous life as a barback.