You Don't Say?!

You Don't Say is, umm, for example like this:

Random Reporter: THE BURNING HOUSE is reported to be caused by FIRE.
Me watching the TV: You Don't Say?!

It is clear that the burning house is caused by fire, but he/she still said it. Other example is:

Random student: Do we have to do this assignment?
Teacher: No, just eat that assignment.

Okay, people, that's it. Let me display you some You Don't Say compilation taken from these sites:
Memecenter.com, ragestaches.com, trollino.com and many more.