Task: Analyze the tweet's sentiment and assign it to either 'neutral or no emotion' or one or more of the specified emotions (anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust).
Tweet: At 12:01, Tumblr became sentient. At 1.:02, Tumblr posted gn animated gif about it. At 12:03, Tumblr shipped itself.
This tweet contains emotions: 
joy