One Piece Chapter 6, page 6: Chapter 6: Number One

Luffy beams with a massive grin, completely unfazed by Zoro's threat. He replies, "THE WORLD'S GREATEST SWORDSMAN, THAT'S GREAT! AND IT'S FITTING SINCE YOUR NEW BOSS IS GOING TO BE THE KING OF THE PIRATES! ANYTHING ELSE WOULD MAKE ME LOOK BAD!" Zoro can only smirk and mutter, "HMPH! YOU TALK BIG..." Meanwhile, Captain Morgan loses his patience and screams at his hesitant troops, "WHY DO YOU HESITATE!? HACK THOSE BRIGANDS INTO MINCE-MEAT! NOW!!" Sensing the incoming attack, Luffy prepares his own move, shouting, "GUM-GUM..." and warning his new partner, "ZOLO, DUCK!!"