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 ignorant – was never funny!
Oh mr mastermind go Bach in hiding we don’t give a$#%&!@*what you think.
Good point!
He’s old and mental, so he can die anytime soon!
Nobody gives a damn what this panhandler has to say!
Worm
What a. Asshole
Ewww.
Your the ignorant$#%&!@*of the earth Letterman.
Third that!