I try to entertain people by asking if they've seen a couple of droids, a princess, rebel scum, a wookie, etc.. lurking about and to report them immediately. Sometimes I'll make sarcastic remarks that gets a chuckle. A Canadian couple told me once that they had a tough time with US customs at the border and I commented on the dangers of fascism. They just started laughing their heads off because here they were listening about those dangers from someone dressed as an enforcer of fascist values in a sci-fi setting.