Richard: Sarcasm is the refuge of losers.
Frank: [Sarcastically] really?
Richard: Sarcasm is losers trying to bring winners down to their level.
Frank: [Sarcastically] Thank you for opening my eyes to what a loser I am!

http://imdb.com/title/tt0449059/
http://imdb.com/title/tt0449059/
http://imdb.com/title/tt0449059/