One Piece Chapter 15, page 9: Chapter 15: GONG

Luffy suddenly appears and grabs Boodle from behind, pulling him away. Buggy gasps, "THE KID IN THE STRAW HAT!" Luffy smiles broadly and says, "I'M BACK!" Boodle coughs violently, "HACK! KOFF! KOFF!" Luffy confidently declares, "I TOLD YOU I'D CLOBBER YOU!"