Sentence:  “Stop it, you daft thing.” He draws me into a warm hug. “I might be a bit of a <WSD>boofhead</WSD> but I do understand.” / My arms wrap tightly around him. “You′re not a <WSD>boofhead</WSD>. You′re a very nice man and I′m glad you′re my friend.” 
Meaning of the word marked with <WSD> tags:  an idiot; a fathead.