|1.||who do you think you are|
Rhetorical question asked of or when discussing a person who is acting in an annoying, stereotypical manner or is a poser.
The chocolate solder: Military.
To female who is obsessed by her own appearence; Who do you think you are? Barbie.
To a male who is overdoing the macho; Who do you think you are? Rambo.
About a bible thumper; Who does he think he is; Jesus Christ.