Sokka: I'm not from the Fire Nation. I'm from the southern Water tribe. I lied so I can learn swordsmanship from you. I'm sorry.
Piandao: I'm sorry too.
[Piandao proceeds to attack Sokka.]
Piandao: I'm sorry too.
[Piandao proceeds to attack Sokka.]
Sokka : I'm not from the Fire Nation. I'm from the southern Water tribe. I lied so I can learn swordsmanship from you. I'm sorry.
Piandao : I'm sorry too.
[Piandao proceeds to attack Sokka.]
http://www.tv-quotes.com/shows/avatar-the-last-airbender/quote_17445.html