Task: Categorize the tweet's emotional expression, classifying it as either 'neutral or no emotion' or as one or more of the specified emotions (anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust) that reflect the tweeter's state of mind.
Tweet: @JohnRMoffitt This is the most grim piece of laughter I was stricken with all day.
This tweet contains emotions: 
joy, sadness