Task: Determine the prevailing emotional tone of the tweet, categorizing it as either 'neutral or no emotion' or as one or more of the given emotions (anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust) that most accurately represent the tweeter's mental state.
Tweet: I can't WAIT to go to work tomorrow with a high as fuck fever. [sarcasm]\nHopefully I'll feel better tomorrow.\nBut I doubt it. #pessimism
This tweet contains emotions: 
pessimism, sadness