Exhibit a) submitted by an anonymous bystander at a lunch counter in Oregon Caves National Park:

Exhibit b) submitted by Patrick in Kansas City, Missouri, who explains: “My friends Chris and Katie had a rude waitress a few weeks ago. In order to tell the waitress that there was indeed a reason she wasn’t getting a tip, Chris left this little note where the tip would ordinarily go.”

Though I can certainly empathize, as a former food service industry worker I just can’t condone not leaving a tip. (I’m guessing there are a lot of you, however, who’d disagree.)

related: passive-aggressive linkage