The exact original source of this "som" clip is unclear from the available information, but it appears in meme and button-board usage, especially around Brazilian Portuguese searches like button meme. Short sounds like this spread through soundboard apps, reposted clips and quick social edits because they are easy to drop onto cuts. It stays useful because creators want tiny audio cues that can mark a reveal, reaction or visual gag without taking over the whole scene. Related button-board humor overlaps with button meme formats.