One Piece Chapter 1, page 12-13: Romance Dawn

Shanks rests his chin on his hand, unimpressed: "A pistol, eh? Is that so..." Luffy snaps: "Are you doubting me?!" The rest of the pirate crew rallies around Luffy, laughing and cheering: "Calm down, Luffy! Let's just have a good time! Yeah! Pirates always have a good time! The sea is vast and there's lots of islands to explore! And best of all, pirates have freedom!!" Luffy's eyes light up with wonder, but Shanks quickly intervenes, eating his food: "You guys stop filling his head with crazy ideas." Yasopp grins: "But it's true! Right!?

Yasopp and another pirate try to convince their captain: "C'mon, Cap'n... Let's take the lad with us just this once..." Shanks smiles slyly: "Okay, but one of you will have to stay behind..." The crew immediately backtracks, laughing: "Sorry, laddy, you've just been benched! Let's drink!" Luffy grumbles: "Hey!! I thought you guys were on my side!" Shanks tells him: "You're just too young, kid. Maybe in 10 years I'll give you a chance." Luffy yells: "I'm not a little kid!!" Shanks tries to soothe him: "Don't get upset now. Here, have some milk." Luffy happily drinks it: "Oh boy! Thanks!" Shanks immediately bursts out laughing: "See! A real pirate would never drink milk!!" Luffy slams his cup down, furious: "That was a dirty trick!