Student or Learner
could anyone explain to me on this expression and with an example? Thanks!
'The proverbial' is a common (and multi-purpose) euphemism for any offensive word in an idiom. Instead, for example, of 'a pain in the a$$' (I've used dollar signs there because this is the American version of 'a pain in the ar£e' ), one can say 'a pain in the proverbial'. In the case of your expression, the offensive word is ... [Expletive deleted]*
What do I care? When the proverbial hits the fan, I won't be around.
* This euphemism was popularized by the publication of the Watergate transcripts. It was presumably used before then, whenever current speech was transcribed for official purposes; but those transcripts brought the expression into more general use.