He was just trying to tease me - I knew that later - but he said he'd have to leave because it wasn't fair to have anyone in the room who was going to make fun of what he had to say. He had a good sense of humor really.
It is true that short forms of poetry have been cultivated in the Far East more than in modern Europe but in all European literature short forms of poetry are to be found - indeed quite as short as anything in Japanese.