Larry King challenges Geraldo to shirtless selfie

From Larry King's Instagram: "Geraldo Rivera has competition - 80 is the new 50!"

We provided Rivera with a link to the photo and asked for his thoughts. "Larry’s a stud," Rivera told TheBlaze, "and his obvious physical prowess gives me hope for the future."

That, of course, is not King's body. It's the body of singer Nick Jonas, who recently shared the photo on his own Instagram.

For his part, Rivera famously/infamously tweeted a photo of himself in July wearing nothing more than a towel around his lower waist. "70 is the new 50," it said.

See the real shirtless King...