Banned for damp humour.
Banned for assuming that there aren't multiple sides to every person, forgetting that what you speak of is when someone expresses multiple radically different behaviors, rather than having a simple inner conflict about whether you should correct someones grammar or not do it and therefore go against what they wanted me to do.
Banned for being simple and conflicted.... not being able to make up your mind. If you can't then nobody else is gonna do it for you.
Oh, and triple banned for not knowing who Guy Fawkes was..... quadruply banned for asking me rather than googling it yourself.
Oh shoot, while I'm at it, I suppose... banned for being behind bars.