Answer:
Moparopyop hopadop a lopitoptoplope lopamopbop. That means ?Mary had a little lamb? in the secret language of Opish. Have you ever thought of using a language all your own? How about Double-Dutch, Na, or Skimono Jive? If you speak a secret language, no one will understand a word you say (until you tell them how it's done). Sound like fun? Try it! We've used ?Mary had a little lamb? for each example.
