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Any books where the villains plans fall hilariously apart on their own?
(sh.itjust.works)
This is pretty close to the premise of Good Omens if I'm remembering correctly.
And a good number of other Terry Pratchett books!
Celeterra by CP Suter comes to mind.
A Confederacy of Dunces, maybe?
I would say that there’s definitely a moment like this (for a loose interpretation) in When the Moon Hits Your Eye by John Scalzi
Not exactly what your looking for but: https://www.amazon.com/Top-Hat-Express-Adventure-Vaudevillain-ebook/dp/B0CM8PY73V
Top Hat Express
Quite a few villains in that and they do some wacky things. Its a fun romp. I like the first book more than the subsequent ones but I enjoyed reading it.
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