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 u r a dumbass
What is he smoking?
Dems are trying to build one
Dumbass libtard
Wow when did letterman become a homeless crazy old coot?
Nobody really cares what Letterman says or thinks!
All that facial growth has obviously put a strain on his brain!
Libtard, dave.
You WERE funny.
This dumb$#%&!@*is from Indiana that sold out his soul to entertainment world period
Oh, David. You should have stayed in your cave. The 95% liberal media has tried to destroy Trump and you think he owes them anything short of contempt? He should bar them from the WH press room indefinitely, not treat them with even a modicum of respect.