An Béal Bocht (The Poor Mouth) is a 1941 novel in Irish by Brian O'Nolan (better known by his pen name Flann O'Brien), published under the pseudonym "Myles na gCopaleen".
set in Corca Dhorcha, a remote region of Western Ireland where it never stops raining, everyone lives in desperate poverty (and always will), while also talking in "the learned smooth Gaelic".
It is a memoir of one Bónapárt Ó Cúnasa (Bonaparte O'Coonassa), a resident of this region, beginning at his very birth.
At one point the area is visited by hordes of Gaeilgeoirí (Irish language lovers) from Dublin, who explain that not only should one always speak Irish, but also every sentence one utters in Irish should be about the language question.
However, they eventually abandon the area because the poverty is too impoverished, the cultural authenticity is too culturally authentic, and because the dialect of the Irish-language spoken in Corca Dhorcha is far too Irish.
example: https://www.youtube.com/watch?v=BNFfDirBE6w with transcript and translation: https://songsinirish.com/?song=i-wanna-fight-your-father-lyr...