Fans Say Michael Douglas, 79, Is 'Aging Finely' in Rare Late-Night TV Appearance

We may all be growing older, but Michael Douglas is just as youthful and vibrant as ever!

Fans were delighted to see the prolific actor make a rare late-night TV appearance this week, joining Stephen Colbert for an eventful episode of The Late Show

Douglas, 79, sat down with Colbert for the Monday, July 8 episode of the talk show, where he discussed his recent mini series Franklin, as well as his upcoming documentary project, America's Burning.

Dressed in a blue suit jacket and a pastel pink shirt for the appearance, the Fatal Attraction actor looked perfectly dapper, with a clean-cut shave and his shiny silver locks neatly brushed back.

"Aging finely," one viewer wrote in the YouTube comments from Monday's episode.

Douglas further proved that age is just a number throughout his spirited conversation with Colbert, where he joked around about an array of topics, the silliest being Ben Franklin's particular fascination with flatulence.

Pointing out that Franklin—whom he portrayed in the Franklin series—wrote a book entitled Fart Proudly, Douglas joked about "ripping one" himself when they were filming the show. (He even put his hand under his arm at one point during the interview in attempt to make fart noises.)

"Early on, I figured I wanted to set the tone," Douglas said of his days filming the series, which were usually eight hours long. "The first hour they're either going to love me or hate me, so let's do it now—Give them the rip!"

"Just rip one right now," he remembered thinking, making Colbert reach over and shake his hand, telling the iconic film star, "Good for you."

We're not sure exactly if Douglas was being serious about passing gas on set—but for the sake of his fellow cast and crew, let's hope not!

Next: Michael Douglas Learns He's Descended From Criminals and Related to a Marvel Actress on 'Finding Your Roots'