You're banned because no rule has been established referring to the validity of a ban, just have to have a reason so you don't have whole pages of users just saying 'banned'.
You're banned because there is a thread in the Tavern called Super cool and awesome bunnies! I also have an illustration of what the title does to the thread:
You're banned because I've actually seen a thread like it called super cool and awesome kittens about forum behavior (and if you think I'm ninja'd, guess again, Santi)