Task: Identify the primary emotion conveyed in the tweet and assign it to either 'neutral or no emotion' or one or more of the provided emotions (anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust) that best capture the tweeter's mental state.
Tweet: @bumbleb33tuna door and cleared his throat, trying to dispel any nervousness he had left.
This tweet contains emotions: 
optimism