But he functions well enough to carry on grifting, destroying the planet and fooling almost everybody (media included) that he's sharp and capable.

Since he's always been an idiot, there's no way to tell.

Practically everybody here shares that opinion!

He has gone full retard, like in the movie Tropic Thunder.
'You don't every want to go full retard, like farting in the bathtub and laughing your ass off.'

*No offense to those with that disability.

a lifetime of every possible manner of inactivity, or very early signs of actual disease. I don't think it matters much at this point because he's been impulsive and stupid for decades.

I estimate it arrived right on time.