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: Going off reports on Sky, Stoke played ok tonight. Think i'll stay off the messageboard tonight though -it will be grim on there :/
This tweet contains emotions: 
pessimism, sadness