Waiters and waitresses work so hard to provide fast and friendly service, but some people just don't want to tip, no matter how good the service is. This waitress shared her story of the time she refused to let her coworkers get stiffed on their tip, and it's an awesome tale of pettiness succeeding! As the OP shared to r/Talesfromyourserver, it was a slow day at her restaurant, so it already wasn't the best day for earning tips. At the end of the night, the OP encountered one couple on a date.…