One Piece Chapter 13, page 9: Chapter 13: TREASURE

Mohji is shocked to see Luffy standing before him, stammering, '...DIDN'T I JUST DEAL WITH YOU? YOU SHOULD BE DEAD!!' Luffy grins confidently and replies, 'IT TAKES MORE THAN A LITTLE KICK TO KILL ME! I'M A RUBBER MAN!' Mohji is bewildered, thinking, 'RUBBER MAN? YOU'VE GOT THE DEVIL'S OWN LUCK, BOY. BUT THAT HIT MUST HAVE SCRAMBLED YOUR BRAINS... YOU'D HAVE TO BE CRAZY... TO TANGLE WITH ME AGAIN!'