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