Task: Determine the prevailing emotional tone of the tweet, categorizing it as either 'neutral or no emotion' or as one or more of the given emotions (anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust) that most accurately represent the tweeter's mental state.
Tweet: What if.... the Metro LRT went over the Walterdale?!?! 😂 #yeg #levity
This tweet contains emotions: 
joy, surprise