What is Da Eff??
1.
1: A corruption of "
2: A way of expressing that what was just said is confusing, stupid, or unexpected.
1: Dude: Hey man, I heard Joe jumped off a cliff!
Other Dude: Da eff?!
2: Dude: I think chickens are people too, man.
Other Dude: Da eff? What are you, retarded?
See