You don't say?

"Every other secretary has been here has been here longer than you Alva, every one. And even if there was someone here who was here just one day longer than you, I still wouldn't ask that person to partake in such a miserable job as long as you were around. That's right Alva, its a horrible, horrible job. Sifting though old contract after old contract, I couldn't think of a more horrible job if I wanted to. And you have to do it. You have to. Or I'll fire you, do you understand?"

- Nicolas Cage from Vampire's Kiss

 (stylized as YOU DON'T SAY? ) is a rage face depicting Nicolas Cage from the movie, Vampire's Kiss. This rage face is used as a sarcastic response to an obvious observation or statement.