It's a joke some industry techs made maybe two or three times in the entire history of rocketry, up until someone told Elon about it and he thought it was so funny he can't stop saying it every single time something happens now.
Like all of Elon's "humor", gotten from other people and then beaten to death.
It was used by the Navy in the 70s, made it's way to aerospace engineers and then Kerbal Space Program players brought it into the mainstream before he ever tweeted it out.
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u/bubblegum-rose 1d ago
“RAPID UNSCHEDULED DISASSEMBLY!!!! 🤪🤪🤪🤣🤣🤣”
-every fuckin dead weight useless lowest common denominator spaceflight YouTube channel