I did say they had "highly divergent levels of success".
Old Man Henderson is the tale of a TTRPG game that spun out of control after a player decided to revolt against the GM. The original story is reproduced here, having been saved from a 4chan archive:
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Alternatively, if you'd rather listen to it in Audiobook form (or audio playlist form, I guess) I'm highly partial to this reading:
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Without spoiling the exact details, it suffices to say that Henderson himself had a penchant for solving problems with prepared explosives. Hence the reference.