For many years, I've thrown social experiments as part of a group I founded, called Ergo. Our rule: we can never repeat the same event format. Once we've used one, it's dead, forcing each event to be experimental. Here are a few of our bizarre/entertaining past events: 1) Novelty party: each attendee brings something interesting (an experience, food, or object) that they believe other attendees will not have experienced before. A winner is crowned based on surveying attendees about how novel...