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I learned recently that it can also mean "the spacecraft exploded on the launchpad in an enormous fireball."

That's already known as "rapid unscheduled disassembly" - and happens so-often in spaceflight that it's hardly anomalous at this point.

I do love the term "lithobraking" as well.

I feel like we're all forgetting the most obvious root cause... "aliens"

Or it has failed catastrophically and gone under voluntary rapid disassembly to help engineers to diagnose the problem: https://www.youtube.com/watch?v=EC9icOKGJ94