The volcano

 How can I complain, when I ask the kids to pick up the living room before dinner and peek in to see if they're doing doing as they should, and I see this.  The ball was their volcano and the fuzz was the smoke (Josiah called it the steam) and they said the hot sticky rock was going down all over the sides.  Greta says, "Here Yosh, I'll throw this ball at it and make it extinct."