Clearly, former CNN prime time hosts Larry King and Piers Morgan are not big fans of each other.
After King derided Morgan's interview skills and called him pompous, Morgan responded on Twitter that King was a "graceless, petty little man".
Morgan's CNN show was cancelled this year. He had replaced King in that time slot in 2011.
King, in an interview with WGRF in Buffalo, says he had trouble watching his successor because the interviews were all about Morgan.
Morgan, in turn, criticised King's ratings, posted a clip where King famously misidentified Ringo Starr as "George," and wrote, "Get over it, you daft old goat."