Top Definition
A valid response to any insult and/or challenge. Even if you are unable to back up the line, saying it is enough to make anyone else's argument invalid.

Stemming from the show Gurren Lagann as a popular catchphrase.
1: You are so stupid.
2: Who the hell do you think I am?!

1: You couldn't win if you tried.
2: Just who the hell do you think I am?
#who #the #hell #do #you #think #i #am
by reggin kcalb January 05, 2014
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