I'm still 12 years old on the inside

And if I'm not why do I find this paragraph so funny?

Now, as for Pluto itself, can't we get the hard-boiled astronomer boys to compromise? OK, bag Pluto as a planet. It's cold and unreliable and not much bigger than Delaware. Fair enough, eighty-six it. But then let's change the name of Uranus to Pluto. Nobody has the foggiest idea who Uranus was. We connect with all the other planets. Mercury delivers flowers. Venus is naked. Mars is science fiction. Jupiter is real big. Saturn has rings. Neptune is the ocean guy with the pitchfork. But Uranus? Nobody has a clue. Besides, apart from Earth, it's the ugliest name for a planet. Nobody will miss Uranus if it's gone. Name an asteroid or something after Uranus, and everybody will be happy.

If we can move the Dodgers to Los Angeles and the Colts to Indianapolis, we can surely move Pluto to Uranus.

I, for one, would certainly miss my anus if it were gone.