Why did everybody say what wrong was with my joke? What is wrong with everybody?

I only need 5s to understand it. Who can understand it ??? link: a href="http://answers.yahoo.com/question/index;_ylt=Agbac0jV.RDwuYjpIuc.VlrW_Nw4;_ylv=3?qid=20110630063248AAG8Ugy"http://answers.yahoo.com/question/index;…/a