You dont say

No Shit

"Your going to have a baby??" "You dont say."

Hey you dont say that!

the funniest qoute from the movie "Step Brothers"
you probably looked this up because you lolz so hard at the qoute that you decide to go on urban dictionary to lolz some more. or because you listen to Slayer and leik mudkipz

Will Ferrell:who's the retard?
John C.Reilly: You
Will Ferrell: Hey you dont say that!