丈二和尚

Explanation: (Twisters) scratching their heads. Refers to figure out how it was. 　　Source: "Golden Lotus legend" The Sixth Round possidetis Ogata saw, like Yet something, scratching their heads, legs and joints feel soft down, thump thump into one kneeling. " 　　Examples: Zhou Tianhong ~ scratching their heads a little, hurriedly asked 'how, positions should not it? '★ Wei Wei "Fire Phoenix" one hundred and seven