look up any word, like the eiffel tower:
 
4.
Short for: "What did you say?"
Usually used when hearing something unpleasant.
Person 1: Yo, I'ma mess you up!!!
Person 2: Say what?
by Applepiepastry January 22, 2007
 
1.
A term used when a person wishes for a surprising or astonishing statement to be repeated, or simply to show their surprise at said statement. To accurately model the timbre of the phrase, omit a high pitch during the last portion of the phrase in addition to stretching the "what" as long as deemed necessary by the user: Say (In high pitch) Whaaaat?!!
Joe: Im really a woman...
Bob: Say Whaaaaaaaat?!
by Adict June 11, 2003
 
2.
A term habitually used by African-American women after learning surprising news.
Mashantelle: I heard dat Latifette gots her hair all done in braids!

Latoyifa: Say whaaat?

Mashantelle: Mm-hm, girlfriend!
by Joel April 12, 2005
 
3.
Same as the word "what did you say?"
Steve: Are you virgin?

marie: Say what?
by Randy C. October 15, 2005
 
5.
When somebody say's 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 Radiohead's 'Just'.
Say what?
You really need to watch the radiohead video for 'Just', thats a proper Saywhat?
by Mr Jaffa Cake March 05, 2009
 
6.
when you have heard something that completely displeases you, and you must ask..

SAY WHAT??
anne talor: sucka you got served!

rickie lake: SAY WHAT??

alex trebek: you must answer in the form of a question!
by rancor June 06, 2004
 
7.
When a black male finds himself unable to hear a line of dialogue previously spoken by another black male.
Wiggy T: Yo yo yo, lets be trippin, y'all.
*flashes bling*
IP Maxxx: Say What?
Wiggy T: *repeats himself*
by The Entropy September 22, 2008