Task: Assess the emotional content of the tweet and classify 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 best represent the tweeter's mental state.
Tweet: I fear that if United bottle this my heart would actually collapse from laughter.
This tweet contains emotions: 
fear, joy, optimism, trust