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: @Danger_McLovin Well done! 😀 (your twins Charlii and Cadance)
This tweet contains emotions: 
joy