Meet Real-Life Hatfield & McCoy Descendants

Some things never change.

America's most famous family feud carries on as the descendants of the Hatfields and McCoys continue to have tension along the West Virginia and Kentucky border in History Channel's Hatfields and McCoys: White Lightning.

RELATED: Behind the Scenes of Hatfields & McCoys

Watch our clip to see the Hatfield and McCoy modern-day matriarchs, Grannie Billie and Mamaw Irene, in rare form.

"Your ass is grass and I'm the lawn mower," Mamaw Irene of the McCoy clan tells one young man that seems to have gotten on her bad side.

On the show, the two families must learn to work together for the sake of a lucrative business opportunity involving the two clans' secret moonshine recipes, but clearly neither side is completely ready to set aside their differences just yet.

Hatfields and McCoys: White Lightning airs Thursdays at 10 p.m. on History.