I wish this would go away. I still think it has something to do with the "odd man out". Why would you create that elaborate scheme and then stick another X outside of the chorus line? Well, it could be a red herring, but that seems unlikely. As with EXE, I wondered about wordplay with Isle of Man (MAN X)...
There is only one country that I know of that allows kangaroos to be kept as backyard pets. Don't allow a "wild one" one to corner you. That is why we eat our national emblem.