Hash courses defy convention. Water will be encountered on the run. And if you wear new shoes you will be mocked, and will probably drink from them later. It was probably the only time the patrons were more scantily clad than the performers. After the hash, the real fun begins.
Beer is the preferred drink, but non-alcoholic drinks can be substituted.
Songs are sung, badly. Jokes are told, poorly. And it's way more fun than the post-race awards at an 8K race. So the next time you're feeling frisky or just want to run with out timing yourself, go ahead and put fun in your run. Add a little anarchy and get shiggy with it.