Here's a clip from the This American Life TV show about a hot dog joint in Chicago called The Wieners Circle. On weekend nights after the bars close, the staff and drunken patrons yell verbal abuse at one another like prison inmates or Jerry Springer's guests.
This, this free-for-all has doubled their business, Larry and Barry figure. They end up seeing a side of people that, honestly, changes how you feel about everybody. You really wish you never saw it.
There are several other Wieners Circle videos on YouTube, including one where a customer orders a chocolate shake, throws down $40, and one of the workers begins to take her shirt off. (via delicious ghost)