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: My back is starting to irritate me and it's barely 2:19 😓
This tweet contains emotions: 
anger, disgust, sadness