have favourite funny book? looking for funny dark books that hits spot for those with cptsd

A slightly different request, but been reading Mariam Keynes, great author but the family connection and love, just feels unsettling and alien, I thought I would ask you lot, love funny books fiction or non fiction, - love most dark humour too.

Bonus if its Welsh, Irish English or Scottish - love their humour!

So what and why is it your favourite?

my recommendation is Racheal's Holiday by Mariam Keyes (others are not dark enough!)

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>please no sa type humor<