Hmm... perhaps I should explain the Banana Quack. The trouble is, I don't really understand the Banana Quack. It's an exclamation pioneered by 14 year old montessori students, and has no discernable meaning. I think it's just one of those things you say when you don't have anything to say... along with it's companion, Bo, which has come to mean, "Really?" and which should be replied to as "Fish Bo," which basically means "Yeah." Hope that clears some things up.