I used to tip 15%. I used that (handy!) trick of doubling the tax to figure that terrible math problem out.
Then, my best friend became a server some time in the mid 90’s. That’s when I was informed that we are all stupid under-tipping assholes and we need to tip at least 20% because servers have to tip the runners and the busers as well…
And then I started tipping a little more than 20% when it was brought to my attention that many places withhold 11-13% of each food servers daily tickets based on the faulty assumption that most of America aren’t stupid under-tipping assholes.
And now that I have small children that leave the table, high chair, booster seat, carpet, window treatments and other patrons covered in their partially eaten grilled cheeses and corn dog nuggets, I leave closer to 50% tip.
Now I’m an informed over-tipping asshole.