The clip takes its name from the Boeing 737 MAX, the commercial jet whose hydraulic systems control flight surfaces, landing gear and other moving parts. Short aviation clips like this circulate among plane spotters, flight simulator players and meme editors who isolate recognisable mechanical noises from larger recordings. Online, the hydraulics sound became a shorthand joke for anything mechanical failing in a complicated way, and it is still reused because its single abrupt burst is easy to recognise, loop and drop into edits without explanation.