Made popular by the popular Chicago etiquette blog, Innocent Barstander.
-To publicly
criticize someone whose public behavior is rude,
obnoxious, or disruptive, often with comedic results.
-To exercise a deep passion for reinforcing proper etiquette in
restaurants, bars, and clubs, such as how much to tip, how to dress, how loudly to speak when ordering drinks, etc. by chastising offenders.