I can see why they didn't want to let this one out of the barn.
An inherited disease that leads to violent outbursts and short tempers seems to have plagued McCoy family members and may have helped to set off the infamous feud with the Hatfields in the late 1800s.
The long-running battle, which played out the between the clans in the hill country of eastern Kentucky and West Virginia, is thought to have begun over land during the Civil War.
Descendants of the McCoys are now being treated for Hippel-Lindau, a condition that also causes tumors in the eyes, ears, pancreas, kidneys, brain and spine, according to Vanderbilt University endocrinologists. Three-quarters of affected McCoy kindred have adrenal gland tumors.
Genetic experts supposedly have known about the McCoys' afflictions for decades, but kept it a secret ... some kinsfolk say because of insurance reasons.
I'd say because it gives way to more jokes about marrying your cousin.
Why does that dueling banjo song come to mind?