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: I'm slugging vitamin D pills by the handful, like they were m&amp;ms. When will this eternal winter end?! #Melbourne #grim #overit
This tweet contains emotions: 
anger, disgust, sadness