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: @ShieldsCap &lt; Steve between his feet, feeling a blush sting his cheeks. 'I can undress myself, thank you very much,' he snapped &gt;
This tweet contains emotions: 
anger, joy