Billy Ray Cyrus' son Trace Cyrus has called his dad the "lamest man ever to walk planet earth" in a scathing social media rant.
The musician - who is the brother of pop star Miley Cyrus - blasted his father in a post on Instagram in which he claimed Billy Ray skipped the funeral of Trace's beloved grandmother Loretta Finley - known as Mammie - five years ago because he didn't want to fly to Los Angeles and Trace pointed out the Achy Breaky Heart singer had recently made a trip to Italy for a holiday with his girlfriend Elizabeth Hurley.
