Pou arrived as a mobile virtual pet game in 2012, built around caring for a small brown alien creature by feeding it, cleaning it, playing mini games and putting it to sleep. Its simple voiced reactions became easy to lift for short edits, and sleep related clips spread in Spanish speaking meme and messaging circles as a shorthand for being exhausted. The sleepy cue stays popular because Pou is widely recognised, the feeling is universal, and the brief sound works without any setup or dialogue to explain the joke to new viewers online today.