My girls (and boys) go crazy over watermelon! I buy it just so that I can give them the "leftovers" and watch them enjoy it. They like cantaloupe almost as much.
freeze a watermelon rind when it is super hot, and they will go wild on it if it is a hot Oklahoma day,,,,,, YES i know that oklahoma isn't THAT hot, but it got up too 104 today,,,, that's hot, i wonder how the Texans are fairing this year lol