Once upon a time, the port-a-potties in the infield of Pimlico Race Course on Preakness day were lined up in long rows. At that same time, patrons could bring their own alcohol into the event, and they brought a lot of it.
This led to one of the most infamous traditions in the history of day drinking, one that ended seven years ago — the running of the toilets at the Preakness.
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Video of this tradition began popping up on YouTube in the mid-2000s, right around the time camera phones became popular and widely available.