One Piece Chapter 1.1, page 27: Romance Dawn (Version 1)

Luffy catches his straw hat as it falls back onto his head, saying, "AHHH THAT SURPRISED ME. PISTOLS DON'T WORK EITHER...!!!". Shiruku stares at him in utter shock, unable to speak: "...!!?". Gyari and his crew are terrified, screaming in panic, "AAA AAA AAA AAH!!!" and "WE'LL REMEMBER THIS, DAMNIT!!!" as they turn and run away as fast as they can. Luffy grins and stretches his face sideways with his hands, demonstrating his power: "LIKE I WAS SAYING, MY WHOLE BODY IS RUBBER. IT'S THE TRADE OFF FOR NEVER BEING ABLE TO SWIM. COOL, RIGHT?".