Baka is a common Japanese word for fool or idiot, and anime and manga carried it to international audiences who often learn it before any other insult. Elongated versions became a staple reaction online because the tsundere archetype, a character who hides embarrassment or affection behind anger, made the shout instantly recognisable. Fans began clipping and reposting drawn-out deliveries as standalone reactions, detaching the word from any single series. It survives because non-speakers can still hear the meaning in the tone, making it useful far beyond anime edits.