Task: Classify the mental state of the tweeter based on the tweet, determining if it is 'neutral or no emotion' or characterized by any of the provided emotions (anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust).
Tweet: @brooklynbreeder \nI could not believe that their answer to his outrage was that they were right. I do hope he takes them to the cleaners.
This tweet contains emotions: 
anger, disgust, optimism, surprise