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: #ADP's #ezlabor web portal has to be THE SLOWEST web app I have ever had the displeasure of using!!
This tweet contains emotions: 
anger, disgust, sadness