Sentence:  “Listen, you two <WSD>deadheads</WSD>,” he growled at them, more viciously energetic than he meant, and both turned to stare. He softened his tone. “What's going on here, anyway? What kind of a morgue is this? Is this any way to spend my last four days in town? Come on, let's all go out and do something.” 
Meaning of the word marked with <WSD> tags:  A stupid or boring person; dullard.