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: @JohnRMoffitt This is the most grim piece of laughter I was stricken with all day.
This tweet contains emotions: 
joy, sadness