David Letterman’s 33-year run on late-night television was marked by his acerbic sense of humor.
Upon retiring in 2015, he’s undergone a metamorphosis into someone almost unrecognizable from the more comedic guy people watched on the “Late Show with David Letterman”.
He’s grown a full beard, which coupled with his balding head, makes him look like a guy wanting to moonlight as a department store Santa Claus.
But beneath that kindly-looking exterior lurks a clearly bitter and troubled man, as evidenced by recent nasty remarks about President Donald Trump.
It’s spelled out on the next page. See how the funny guy seems to have lost his sense of humor.

Letterman is a nutcase liberal
Call the White house to voice your disguse for this onslaught hatred of our President and his family…phone# 202-456-1414 or 1111! Let your patriotic voice be HEARD!!
He was never that funny but he is the last one to call ignorant. Trump is smarter than he’ll ever be.
You….uuuuuuuu
Like I would go for him for advice -he’s the champion of making wrong decisions
Trump is not as ignorant as letterman
Pfftttt!!!!!!!
God what an idiot
Trump has forgotten more than Letterman will ever know.
I thought your retired that ignorant mouth