Sylvester the Cat is one of the best-known Looney Tunes characters, a black-and-white tuxedo cat forever chasing Tweety Bird and often getting the worst of it. His distinctive lisping voice, created by Mel Blanc, made even a simple dismissal sound instantly recognisable to generations of cartoon viewers. Short lines like this one have lived on through reruns, compilations and meme edits, where a familiar cartoon voice can deliver a joke faster than a new recording. That instant recognition is why the line still works as a reaction sound today.