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 swear if @devincameron23 blocks me I'm going to hit her back #revenge
This tweet contains emotions: 
anger, disgust