A kid climbed up on to the roof of an outhouse, attracted by the grass and other things that grew in the thatch（茅草）; and as he stood there browsing away, he caught sight of a wolf passing below, and jeered at（嘲笑） him because he couldn't reach him. 

The wolf only looked up and said, "I hear you, my young friend; but it is not you who mock（嘲弄） me, but the roof on which you are standing."