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.

He is a worthless piece of bull c**p!!!
Letterman is as dumb as they come he is the ignorant one
He’s always been bitter
Maybe David you could put a few up in your New York apartment for a few days of cleanings
No, Duda you are Ignorant
Name calling serves no purpose!
Letterman is mothing BUT a joke
Crawl back into your hole and stay there. Couldn’t stand before and really can’t stand you now
Looked in the mirror lately … You are the ignorant one….
Never could stand him or his show was so glad to him retired