David Letterman Reveals Real Reason He Is Retiring From "Late Show" (VIDEO)

David Letterman spoke out about his decision to retire from the "Late Show" on Friday's episode, one day after his big announcement.

During his monologue, Letterman, 66, made a series of jokes about the outcome of the news.

Letterman also opened up about the real reason of his retirement.

Check out the video below…
 
 

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