
Originally Posted by
jellyshots
Agree with Bro Ahlungor.
Originally TIPS stood for "to improve professional service". It was generally provided before payment of the bill.
In a busy bar, I typically watch the bartenders who look like they care about the job and will give them $10-20 at the beginning of the night then pay for the round.
When you have a group, it's easy to grab $5 off each person. The bartender remembers and no matter how long the lineup, if I wait, they'll catch my eye, make my drinks on the side and basically I get personal service.