Wizard : "I've mastered all kinds of elemental magics. Fire, earth, water, and many more..."
Ninja : "What a beginner. Those are all predictable elements. I've mastered the most unpredictable elements of all time."
Wizard : "Interesting. What elements you've mastered? Thunder? Wind?"
Ninja : "Elements of surprise."
-next day, youtube: "Here, watch this video about how to make a hidden door behind a dresser"