It's clear. If you teach me sword fighting.

He wields his kitchen knife theatrically like a sword.

Zorro (amused - stunned by so much amateurism)
But not like that! So, first of all, not from your wrist ... with your whole arm, you know?

Fade out.
Change of scene. Luffy in a fighting stance.

Luffy (roars)
YOU BREAKED MY FRIEND'S FINGERS! NOW IT'S YOUR TURN, YOU BUMPER!