Doonesbury by Garry Trudeau for November 05, 1974
Teenager: What you talkin' 'bout, kid? This ain't your glass of Coke - it's mine! Bobby: No, it's not - it's mine! It was on my tray! Teenager: You're crazy, man! This Coke is... Bobby: Mine! I saw you take it! Malcolm: Hey, Bobby, forget it... Teenager: Better lissen to your friend, man, or... Bobby: You... you honky! Teenager: What?! Bobby: No, no... wait a minute, that's wrong... lemme check my notes.