Hmmm . . . Where did the mud come from?

Brock took the kids out for a ride on the Ranger and when they came home they were covered in mud and even their faces had mud on them. Now I know that they wear helmets and I know that Brock drives very slowly and avoids all mudholes so . . . where did the mud come from? :-)

Nothing like hot chocolate to warm up a cold, muddy kid!