One Piece Chapter 2, page 3: THEY CALL HIM "STRAW HAT LUFFY"

The full appearance of the lady pirate "IRON MACE ALVIDA" is revealed as a large, heavy-set woman wearing a pirate hat and captain's coat. She commands her crew, "I DON'T WANT TO SEE EVEN ONE SPECK OF DUST ON THIS SHIP!!!" to which they reply, "AYE AYE!" She looks down at Koby and says, "THAT'S ENOUGH!! YOU'RE PATHETIC!!" sending him flying with an "OOF!". She adds, "IF YOU'VE GOT TIME TO GROVEL, THEN YOU'VE GOT TIME TO SCRUB THE TOILET!!" Koby nervously apologizes, "HEH HEH HEH... SORRY... YES, MILADY! RIGHT AWAY..." while sweating and smiling anxiously.