Starbucks is wrong and you should feel bad for going there!!!
Boycott all starbucks things now!
Also,
Tipping only helps the customer the server serves
after you....
(You're already leaving when you pay your bill/tip.)
The service you get is based on the amount of the tip they got from the skinflint before you... and what you order (see below)
So I command all of you tip at 50% so I get good service from now on, thank you.
Also,
always order a drink other than water. The phrase "I'll just have some water" when deciphered by the customer to server translator roughly translates to "I'm going to tip you a nickel."
If you want excellent service order booze and an appetizer.
Never bring a child to a restaurant, but if you do for christsakes order a drink and a meal for them. DO NOT bust out the sippy cup full of apple juice and the fourteen zip lock bags full of pretzels and carrots and cheerios and apple slices and gummy bears and every other thing!