The clip comes from a viral street interview with Oakland resident Bubb Rubb, filmed as he demonstrated the whistling sound made by modified car exhaust tips. In the clip he imitates the high-pitched woo woo with great enthusiasm, and that short burst became the part people remembered and shared. It spread through early video sites and later short-form platforms, where creators reused it as a loud, comic alert. Its lasting appeal is its simplicity: one voice, one instantly recognisable sound, and no setup needed to get the joke.