The phrase became Bugs Bunny's trademark greeting in Warner Bros.' Looney Tunes cartoons, where the laid-back rabbit used it to disarm much larger opponents with humour instead of panic. Repeated across decades of shorts, television reruns and home video, it entered everyday language as a playful way to say hello. Online, it survives as a short meme greeting, instantly understood even by viewers who have never watched a full cartoon, because the character and his tone are so widely recognised.