Reasons to be flagged from a bar.

Don't be that idiot.
  1. Yelling bartender at the bartender
  2. Dropping head on bar
  3. Knocking drinks over
  4. Slurring words
  5. Starting a fight
  6. Claiming you know the owners
  7. Telling the bartender to serve you more after already being intoxicated for the fact you're a COP!