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: I blame the whole season on Natalie! The season would have been so different had she not turned her back on her alliance! #pissed #bitter
This tweet contains emotions: 
anger, disgust