 At the end, after the showing of the constellations of Wile E. Coyote and  Road Runner, they show the traditional "Thats All Folks!" card again.   Bugs again appears but this time pushes the little quotation marks at the  end back and the whole thing erases itself and the quotation marks scream.   It rewrites itself saying "Thats Not Quite All Folks!"  Bugs Bunny pulls  the card showing the credits.