Sentence:  'Right, lad, stand up! You're going up to A2 landing.' Ronnie was slow to respond, so the screw dragged him to his feet, shouting as though they were on a parade ground. 'Come along, come along! Move yourself, you steaming <WSD>shower of shit</WSD>!' 
Meaning of the word marked with <WSD> tags:  An individual or group.