Saying vulgar things is offensive.
Brad works in a restaurant as a server.
Brad wants to get plenty of tips.
Brad apologizes and cleans up after spilling an order.
Brad swears loudly when spilling an order in front of some patrons.
Brad gets tipped well for being diligent on the job in front of patrons.
Brad doesn't get a tip because he offended the patrons who had brought their small kids.