“Nonsense, Grace, get in at once, and don't make all this fuss; a pretty thing it would be if a man of business had to examine every cab-horse before he hired it--the man knows his own business of course; there, get in and hold your tongue!”
The above is from "Black Beauty" by Anna Sewell. (1877)
I think 'a pretty thing' in the above paragraph is a kind of twisted expression and that's all, but I am not very sure of it. which means just an absurd thing or something.
Am I correct ?