You kids have fun, and be home by Thanksgiving!" our parents would call to us on Halloween night, as we staggered out the front door, weighed down by hundreds of pounds of concealed vandalism supplies, including enough raw eggs to feed Somalia for decades. By morning, thanks to our efforts, the entire neighborhood would be covered with a layer of congealed shaving cream and toilet paper that, around certain unpopular neighbors' homes, was hundreds of feet thick. This is how the Appalachian Mountains were formed.