The Pittsburgh Hash House Harriers.
Even after reading the web site thoroughly, I have no idea what these people do. Something about running and drinking and catching hares. But their web site is rockin’ and they have 80 members! They have funny lyrics to dirty songs. (Sample lyrics: Are yinz from Pittsburgh? / I said from Pittsburgh / Where the emphysema rate is so high / Where streets are narrow / Like Mia Farrow / And flocks of pigeons sh*t in your eye.) In order to be a member, you must lay a trail and provide beer and snacks. What else? The trails are usually 3-4 miles long. They have a hotline! From the photos, there is nudity involved. And apparently at least 30 people are going to do all of this and more this Wednesday, March 15th. Arrr, matey. Beware the Ides of March!
I actually feel kind of drunk after writing this post. Hey! I like this logo!
The way it works: Show up, have a beer. Run a few miles (often singing along the way) trying to follow the trail (they purposely set false trails) to more beer, possibly repeat. At the end they take care of club business, sing incredibly raunchy songs, and have a bite to eat.
You don't have to be a good runner, or a heavy drinker, it's more important to be open-minded and fun.
There are hash houses the world round, each with their own customs.