[Well that explains a lot about his previous encounters with the ninjas. He was wondering how that worked and why he wasn't able to get Tenten's weapons out of the scroll. Or why Shikamaru had such control over shadows.]

I don't see why it couldn't of been explained to me that way instead. All that was shown to me was weapons suddenly manifesting themselves out of a scroll. Or being told that it can conjure frogs. [He'll never get over that one.]