This sound is the “pull up” alert from the Collins FPC-75 Ground Proximity Warning System, a cockpit safety voice warning associated with older airliners including the DC-10. Recordings of GPWS alerts have circulated widely in aviation communities and on video platforms because the phrase is instantly recognizable even to non-pilots. Online, it spread beyond flight content into meme edits, where creators use the warning as shorthand for an unrecoverable mistake, a fast-approaching disaster or a joke that has gone too far.