Sentence:  “I'm rinsing myhair in it, <WSD>nut-head</WSD>,” Julie said from beneath the swirl of dark blond hair. “Hand me my towel.” “<WSD>Nut-head</WSD>? You called your sweet little brother a <WSD>nut-head</WSD>?” 
Meaning of the word marked with <WSD> tags:  Idiot.