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7.
this is a common expression for next morning reaction to a one night stand laying just beside you.
obvious statement; you find some stranger in your bed, and what's the first thing you ask? "who are you?"
by NLU September 07, 2005
 
1.
A rhetorical question, generally in the form of an insulting chant, accompanied by finger-pointing; meant as abuse to a single person or team performing in front of a crowd, by indicating that they are unknown and insignificant.

Abuse is aimed at two groups:
1) An unknown competitor, whose relative anonymity is highlighted even further.
2) Paradoxically, a well-known competitor whose high credibility and status is undermined in an act of defiance by pretending to regard the competitor as unknown or insignificant.

Abuse is aimed in two ways:
1) When the competitor is announced.
2) When the competitor is performing badly.

The phrase is often used in sport, particularly at football matches in the UK.
"Who are you?" is usually pronounced "Who are ya?!", with emphasis on the word "are".

1) Liverpool (big football club) v Grimsby (small football club):

Announcer : "On to the pitch comes...Grimsby"
Liverpool fans : "Who are ya?! Who are ya?! Who are ya?!..."

2) Leyton Orient (small football club) v Chelsea (big football club)

The Chelsea player, Didier Drogba, misses a clear chance of scoring a goal and falls over badly, clutching his knee in agony.

Leyton Orient fans : "Who are ya?! Who are ya?! Who are ya?!..."
by JezGex November 16, 2007
 
2.
One of the band "The Who"'s last songs; also found as the theme song for CSI
"Have you ever heard the song 'Who Are You' by The Who?"
by Ajax Segidy IV February 15, 2004
 
3.
a rhetorical phrase that insinuates that the person who is being spoken to is either strange or a moron.

the person being spoken to with usualy reply with their full name but you're never actually looking for an answer, hence it being rhetorical.
who are you?
by megHan June 02, 2004
 
4.
A term used to take away respect from someone. (Questioning their reputation or status)
This term is not used lightly, and if its thrown around, someones sure to get knocked the FUCK out.

Variation: Who do you think you are, who is you
guy1: Who are you, I ain't never heard of you before
guy2: Who is me? who the FUCK is you?
by jcashmoney June 01, 2009
 
5.
Originating on Cape Cod; a greeting between friends... (or enemies)... based on a line from one of Arnold Schwarzenegger's movies, taken off an internet soundboard used to prank call people w/the governator's voice. Rapidly gaining popularity wherever its original users are in college... from Florida to New England. On one legendary occasion, yours truly got Ahhnold himself to say "who ahh you!?" when the terminator was sited at Gold's Gym on the Cape.
(note: must be said with an Austrian accent)
-"WHO ARE YOU!?!?!"
-"I'm Detective John Kimble!"

-"WHO ARE YOU!?!?"
-"I AM QUAID!!!"
by sorensen September 30, 2005
 
6.
Mall Monkey writer Keith Smith's catch phrase. He says it frequently due to the fact that he despises going to the mall on his own time.
"What's with that hat?"
"WHO ARE YOU?!"
by dj gs68 July 14, 2003