Sentence:  I told him about everything I could think of; and what I couldn't think of he did. He asked about six questions during my <WSD>yarn</WSD>, but every question had a point to it. At the end he bowed and thanked me once more. As a thanker he was main-truck high; I never see anybody so polite. 
Meaning of the word marked with <WSD> tags:  A story, a tale, especially one that is incredible.