It has often struck me that some heritage railways do come up with some rather odd themes for their special events and these often seem to have no obvious railway relevance. Examples include Sci-Fi Weekends and Farmyard Friends; and I've just found a 'Hawaiian Sunday' advertised. So. . . what's the strangest advertised event you have see on a heritage railway? Did you go the event? What did you think of it? (For the purposes of this thread, obvious childrens events are excluded. Road transport events don't count either (as they are at least transport related) Only events hosted by the railway count. So nearby events that the railways are supporting also don't count unless the railway is the organiser).