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The original was posted on /r/todayilearned by /u/trioprice on 2024-05-24 20:37:34+00:00.

Original Title: TIL that if you hear “Stars and Stripes Forever” at a circus, you better run toward the exits. Circuses use the song as an way to alert employees that there’s a disaster afoot, and they won’t play the song at any other times.