Yes, they probably did, in fact, i remember the little tick box underneath the religion question, it said "are you joking?" Seriously though, just because we think they might be joking doesn't mean they are. Across the world there are several million people who believe that they may previously, or will in the future be cockroaches, and that they are humans because they have been good and have reached the highest level of existence. The religion is called Jainism and it's one of the top ten in the world. Sounds a bit ridiculous huh? To me yes, to them it's their life. If i didn't know better i'd think they were joking. So if 390,000 people in our country alone claim to believe in the force, shouldn't we take it seriously, don't they deserve the chance to be right or wrong. I'm not saying that the Force as we know it in Star Wars is right, but the underlying principles are remarkably similar to several religions, in many ways its an amalgamation of the best bits of the worlds religions. I don't think the census people have the right to judge, only to report the facts as they occur.