One Piece Chapter 38, page 13: PIRATE FLEET

Kuro is insulted by Luffy's comparison, asking, "WHAT? YOU SAY THAT I AM INFERIOR TO THAT 'CAPTAIN' IN A KID'S PIRATE GAME?" Luffy replies, "THAT'S RIGHT." Kuro bursts into hysterical laughter: "HA HA HA HA... YOU'RE SO STUPID! DON'T GET COCKY JUST BECAUSE YOU'VE BROKEN MY 'CAT'S CLAWS'. IN WHAT WAY AM I INFERIOR TO HIM!?!" Kuro then begins to sway side to side, preparing a technique.