Boys and dirt

There are a few things about little boys I just don't understand....the desire to play in the dirt and to get all dirty is one of them. We have a huge sandbox in our backyard, but Brayden just had to play in the dirt by the tree instead. I asked him why he didn't want to play in the sandbox instead of the dirt and he said, "mom, big machines don't dig in sand, they dig in dirt and get really dirty!". Silly me!