Task: Categorize the tweet's emotional tone as either 'neutral or no emotion' or identify the presence of one or more of the given emotions (anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust).
Tweet: From what I know of the man, I have to assume that @realDonaldTrump has had a heated argument with his own penis. #sad
This tweet contains emotions: 
sadness