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.

U need to return back where you were hiding,
Better look letterman… at what he is really doing or are you just too old to learn now
CRAZY
getouttahere.
Letterman is an IDIOT !
I agree that Johnny was better, but Jay Leno is the best
I beg to differ. President Trump is smarter than you
Thanks to NOT listening to your Socialist b******t…
This womanizing pos should go back into retirement and shut his ignorant pie hole.
You are a moron!