In a drama, what is the function of backstory? reveal what will happen after the play ends reveal events that occurred before the play began show the audience who the characters are show the audience where the play is taking place

That alligator hungry. vittles very scarce that time a season. his belly be pinchin him hard, now. but bruh deer is fat, and so he is in heavy trouble. the alligator there in front of him. the beagles there behind him. what bruh deer gone do? he sees the alligator and he hears the beagles. how does the author readers understand what the word pinchin means?