Say what?

[Sarah]

An act of surprise that makes you look stupid as hell.

[Sonia]

Short for: What did you say?
Usually used when hearing something unpleasant.

[Donald Trump]

when you have heard something that completely displeases you, and you must ask..

SAY WHAT??

[Justin Bieber]

When somebody says something you didnt catch, hear, understand or are disgusted with and would like them to repeat it so you can smack them the hell up!.

Or what one would say after watching the music video for Radioheads Just.

[Justin Bieber]

When a black male finds himself unable to hear a line of dialogue previously spoken by another black male.