Years ago, right after Pluto was demoted, I created a juvenile new mnemonic for remembering the solar system.
Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune
The mnemonic was:
Many vegetarians eat meat, just show up naked.
See, the first letters match.
Finally, someone else, someone actually talented, has taken up this pressing problem. Of course, I refer to the XKCD guy. Who else?
He says the "traditional" was
My very excellent mother just served us nachos
Mary's "virgin" explanation made Joseph suspect upstairs neighbor.
Ding! Ding! We have a winner!