This is called an acrostic. It is not an anagram, but it is similar. In this case you have an acrostic used as a mnemonic devise to help remember the names of the eight..., er..., nine... planets. Maybe you could turn nine pizzas into: nan, the delicious Indian bread;
napoleons, the really delicious pastry;
nougat, the candy; unless you feel strongly invested in the planethood of Pluto.