My first dungeon as a newbie druid, decided to tank Deadmines in cat form. Needless to say, it didn't go too well. I needed on every item that dropped, to disenchant it to level up my enchanting skill. The group called me a ninja, to which I adamantly replied that I wasn't a ninja, I was a druid.
I also used to think that mage tables only had a limited amount of food/drink on them, and would only take one stack so there was enough for other people.