The line comes from Animaniacs, the 1990s Warner Bros. animated series starring Yakko, Wakko and Dot Warner, three siblings known for fast jokes, songs and fourth-wall humour. Their playful greetings and catchphrases became easy to lift from episodes and share as short clips, especially among fans who grew up watching the show. On soundboards and in video edits, the greeting survives as a quick burst of cartoon nostalgia, instantly recognisable to viewers who remember the Warner siblings and their chaotic, musical world.