Owen Wilson’s drawn-out “wow” became a long-running meme because he says it in multiple film roles, turning it into one of his best-known vocal trademarks. Online, compilations of his various “wow” deliveries helped spread the sound across YouTube, TikTok, and short meme edits. Creators still use it because the reaction is simple, recognizable, and easy to fit after a visual gag, reveal, or mildly shocking moment, similar to how awkward cricket or shocking are used as quick comedic punctuation.