Quote Originally Posted by lyfoti05 View Post
My personal favorite Japanese phrase thus far:

Mada mada dane.
That can mean many things. "You still have a ways to go," "No, not yet," "Not good enough", "Still no good", or "You still have lots more to work on"

I have only really heard it in the Prince of Tennis anime. The guy used it as an insult or intimidation in a tennis match.