One Piece Chapter 17, page 20: Chapter 17: HIGH LEVEL, LOW LEVEL

Buggy draws several knives between his fingers, warning, "YOU'LL SOON REGRET YOUR WORDS, RUBBER BOY!" Luffy cracks his knuckles, bored, and says, "I'M GETTING BORED. OKAY, HURRY UP AND ATTACK ME." Buggy stares at Luffy's straw hat, his expression turning to anger as he says, "YOU AND YOUR STRAW HAT REMIND ME OF HIM WHEN HE WAS YOUNGER... THAT INSOLENT DOG WITH THE RED HAIR!!!" Luffy gasps in shock, repeating, "...RED HAIR!?"