Zuko: (To himself, after revealing to Aang that he was the one who sent Combustion Man) Ugh, why do I have to be so stupid? How could I tell them that I sent an assassin after them? Couldn't I say that Azula did it? They would've believed that! Stupid! (Hits his head)
  
   Zuko :  (To himself, after revealing to Aang that he was the one who sent Combustion Man)  Ugh, why do I have to be so stupid? How could I tell them that I sent an assassin after them? Couldn't I say that Azula did it? They would've believed that! Stupid!  (Hits his head)  
  http://www.tv-quotes.com/shows/avatar-the-last-airbender/quote_17506.html
  

