The Boeing 767 is a wide-body twin-engine airliner that has been in service since the 1980s, and its cockpit includes an overspeed warning to alert pilots when the aircraft approaches its maximum safe speed. In recordings, that warning is instantly recognisable to aviation fans because of its harsh, repetitive tone. Online, the short clip has been repurposed beyond flight content as a quick audio shorthand for going too fast, losing control, or pushing something past its limit.