Task: Evaluate the tweet for emotional cues and classify 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 indicate the tweeter's state of mind.
Tweet: I've always had a weird grudge against stingrays ever since one killed Steve Irwin.
This tweet contains emotions: 
anger, pessimism, sadness