Task: Analyze the tweet's emotional expression, classifying it as 'neutral or no emotion' or as one or more of the identified emotions (anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust) that best represent the tweeter's emotional state.
Tweet: @neiltyson my BF and I just rewatched the episode of #GravityFalls you were and he's fanboying  #YeahScience
This tweet contains emotions: 