“Hora de mimir” comes from Spanish-language internet slang rather than a clearly documented film or television source. It means “time to sleep,” using “mimir” as a cute, childlike variation of “dormir.” The phrase became common in memes, reaction posts, and short-form videos about tired people, sleepy animals, and bedtime routines. Audio versions continue circulating because the wording is easy to understand, the delivery suits visual punchlines, and the joke works equally well for affectionate goodnight posts and exaggerated exhaustion.