The phrase comes from SideTalk NYC, a street-interview series filmed around New York City and shared widely on TikTok, where interviewees and hosts shouted Bing Bong as a playful catchphrase. A short two-note chime version began circulating as a reaction sound, spreading through edits, duets and compilations that celebrated everyday New York moments. It remains popular because it is instantly tied to the city and to that interview format, working like a ding sound effect but with a local identity, similar in spirit to the Taco Bell Bong, and it signals approval, excitement or a New York punchline.