The disease caused by spending many many hours at your local watering hole, in this case, the American Legion. Onset usually occurs hours to days after drinking has begun. Symptoms include: moderate to extreme embarrassment, dehydration, regret, shame, perhaps a general feeling of "what the hell happened last night?" etc
Are you guys up for a Sunday picnic this afternoon? I'm not sure we'll be able to make it, Joe was out last night and has a severe case of legionnaire's disease today!