This sound is associated with Super Mario Galaxy 2 and was identified in the game's audio files inside SpkRes.Arc under the name CS_NOTICE_USE_DPD. According to the available file notes, it plays from the Wii Remote speaker and does not occur on screen during normal gameplay. That hidden-file origin is a big reason fans still share it today. It remains popular in Nintendo audio collections, custom UI edits, and as a short notification sound for people who want a distinctly Wii-era cue.