Of all the nerve!

of all the

Used to express great annoyance, exasperation, impatience, or frustration with someone or something. You put diesel fuel into the car? Of all the stupid, careless things to do—now the car is ruined! Of all the nerve, implying that I'm somehow to blame for the project's failure!
See also: all, of

Of all the nerve!

exclam. I am shocked by your domineering and high-handed behavior. Of all the nerve! Asking me to do a thing like that!
See also: all, of