Hitchhiker’s stump is a folk saying for a fleshy protuberance formed by abnormal value-added in the human ear, which is known as the paralabial ear in the medical profession. Hitchhiker’s piles are mostly congenital, and the vast majority of newborns show abnormal ear development after birth, which is considered to be related to genetic factors. Statistics show that pregnant women who abuse drugs or are exposed to radiation for a long period of time are more likely to have tethered ears in their offspring. Hitchhikers can be found in different shapes and numbers, and some of the protrusions even have a unique aesthetic appeal. If parents are concerned about the psychological stress that tethering piles may cause to their children, they can have them surgically removed.