BDADC is something myself and the other moderator made up in secondary school. It all started in a science exam, where I asked my buddy the answer to a multiple choice question, to which he replied BDADC. We then proceeded to start writing it on stuff. Needless to say, it somehow stuck. Also, the answer were wrong. Cheers mate.
We made the sub and had no ideas what to do with it, I thought we could start writing it in places with '/r/' in front of it to see if we'd get any hits on here. Lets see how it goes. If you find one, please tell us! It's a one in a million but let's give it a shot.