you don't say

How surprising, is that true? Also, I find that hard to believe. For example, I've been working on this project for two years.—You don't say, or The man who runs this soup kitchen is a real saint.—You don't say! This expression, a shortening of you don't say so, may be used straightforwardly or ironically. [Late 1800s]

Words nearby you don't say

you can't unscramble an egg, you can't win, you can't win 'em all, you cannot serve god and mammon, you could cut it with a knife, you don't say, you get what you pay for, you just don't get it, you know, you know something?, you name it