Sure, watermelon may be part of your July 4th picnic. It is at my house too. But, it's not what you think.
The ceremonial watermelon doubles as flotation device as well as a tasty snack. Yes, as my friends' children pour into the pond, the watermelon does as well.
Last year, sadly, the watermelon broke. Yet, the ever enterprising children made do by throwing the pieces at each other. My dogs helped on clean up duty (my clean up duty after them wasn't so pretty).