Angry Grandpa was the stage name of Charles Green, a YouTube personality who became famous in the 2010s for filmed outbursts, destroyed furniture and pranks staged by his son. Clips of his shouting were shared widely across YouTube, Vine and later TikTok, where short bursts of his rage became a shorthand for disbelief. Even after his death in 2017, his voice kept circulating in reaction edits and meme compilations, because the exaggerated anger reads instantly without context and fits almost any frustrating surprise.