A monster went to the doctor with a branch growing out of his head.
"Hmmm," said the doctor.
"I've no idea what it is." The next week the branch was covered in leaves and blossom.
"I'm stumped," said the doctor, "but you can try taking these pills." When the monster came back a month later the branch had grown into a tree, and just a few weeks later he developed a small pond, surrounded by trees and bushes, all of them on top of his head.
"Ah!" said the doctor, "I know what it is.
You've got a beauty spot."