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: @Senpai_Vanilla This would be the height of hilarity, were it not for the fact that the adult swan is highly likely to attack.
This tweet contains emotions: 
joy