Assess the emotional state conveyed in the tweet "Fed up of smiling at old people and getting dirty looks in return. Go fuck yourself Mildred you miserable prick". Classify it as one of the following: 3: very positive emotional state can be inferred, 2: moderately positive emotional state can be inferred, 1: slightly positive emotional state can be inferred, 0: neutral or mixed emotional state can be inferred, -1: slightly negative emotional state can be inferred, -2: moderately negative emotional state can be inferred, -3: very negative emotional state can be inferred.