One Piece Chapter 2.3, page 18-19: That Boy "The Straw Hat Wearing Luffy"

Coby stops, remembering Luffy's words about being willing to die for his dream. With sweat pouring down his face, Coby suddenly screams at the top of his lungs, "THE.. THE RUDEST DAMNED BITCH!!!!" Luffy bursts out laughing, "HA HA HA HA HA HA HA!!" Alvida's face contorts with absolute rage as she raises her iron mace, screaming, "YOU LITTLE BRAT!!!" Coby stands his ground, crying out, "DON'T REGRET IT!! I'VE ALREADY TOLD MYSELF TO FIGHT FOR MY DREAMS!! A A A A A A A A H A A!!!! A A A A

Luffy quickly grabs Coby and pulls him behind his back, saying, "WELL SAID, COBY! NOW GET BEHIND ME!!" Alvida swings her massive spiked iron mace down with full force, screaming, "BOTH OF YOU... HAVE TO DIE!" The mace strikes Luffy directly on the head with a massive impact. Coby screams, "LU... LUFFY-SAN!!" However, Luffy is completely unharmed. He smiles widely and says, "IT'S USELESS AGAINST ME. BE-CAUSE MY BODY IS RUBBER." Alvida's eyes widen in shock as she stammers, "IM...THAT'S IMPOSSIBLE!!! MY BLUDGEON!" The pirates gasp in disbelief.