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: If yiu don't respond .o an email within 7 days, you willxbe killed by an animated gif of the girl froa The Ri.g.
This tweet contains emotions: 
anger