What element of literary nonsense is present in this excerpt from "How the Animals Lost Their Tails and Got Them Back Traveling from Philadelphia to Medicine Hat" by Carl Sandburg?

He was from Massachusetts, born near Chappaquidwingspan, this old flongboo, and he lived there in a horse chestnut tree six feet thick halfway between South Hadley and Northampton. And at night, before he lost his tail, he lighted up the big hollow cave inside the horse chestnut tree with his yellow torch of a tail.

Question

What element of literary nonsense is present in this excerpt from "How the Animals Lost Their Tails and Got Them Back Traveling from Philadelphia to Medicine Hat" by Carl Sandburg? 

He was from Massachusetts, born near Chappaquidwingspan, this old flongboo, and he lived there in a horse chestnut tree six feet thick halfway between South Hadley and Northampton. And at night, before he lost his tail, he lighted up the big hollow cave inside the horse chestnut tree with his yellow torch of a tail.