The clip comes from a user-uploaded vlog file dated February 2025, where the speaker signs off the recording by wishing Berta good night. It has no known film, show, or celebrity origin, so it lives the way most soundboard oddities do: discovered on a meme soundboard, kept because the phrasing is funny and oddly endearing, and reused as a good-night gag. German speakers recognize it instantly as an everyday bedtime phrase, while everyone else enjoys the mystery of who Berta is. Its staying power is simple — everyone needs a good-night sound, and this one has personality.