Task: Determine the emotional state reflected in the tweet, categorizing it as 'neutral or no emotion' or as one or more of the specific emotions (anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust) that best characterize the emotional tone.
Tweet: @McDonaldsUK just went to burger king... 25p surcharge for using my card! Outrageous! #unhappy
This tweet contains emotions: 