Stupid Uninformed Metro Riders

I don't think there's any other city that gets more ticked off at people for not following the unspoken (yet highly known) rules of their metro system than those of Washington DC. Today a woman slipped her hand in the door of the train as it was closing and held us up a couple minutes, when the door finally opened she popped her head in and asked, "does this train go to Union Station." A collective "NO!" came from us witnessing the incident and as the door shut on the confused woman, we all gave each other the obligatory shaking of the head and sighs of exasperation at those folks who hold us regulars up. ARGH!