When Dib finds out that Zim has no human organs, he attempts to exploit Zimโs ailment of head pigeons to get the skoolโs nurse to examine Zim in hopes she will see the truth. However, when Dib blurts his plan out to Zim, Zim develops a device that will permit him to switch objects for organs, in which he begins to steal the organs of his fellow classmates in order to appear more human in time for his appointment at the nurseโs office.