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: Probably the best OT period I've ever seen. Absolutely exhilarating. #WCH2016 #TeamNA
This tweet contains emotions: 
joy, optimism