I don't think a lot of the words on Urban Dictionary are really appropriate for the forums, but I'm sure there are some. Most of the funny ones I've seen, though I either forgot or won't post (for obvious reasons).
Not very much of a discussion topic is, it? Especially if people start copy pasting and leaving it at that. I can tolerate the quote thread doing this, but otherwise it is just borderline spam.
One thing, though. The text from my UD mug:
Information Master One to be worshiped Librarians wield unfathomable power, bring order to chaos, wisdom and culture to the masses, preserve every aspect of human knowledge and rule the information universe.