In my opinion, any true comedian is damaged and is merely coping in the best way they can. Anyone undamaged is just not as funny, and you can tell.
Madness string 105795
I saw the phrases go from sentences, to repeated words, to scribbles. Eventually, she became too confused to put pen to paper. Opening and closing the booklet, carefully touching the paper, but she couldn't quite figure it out anymore. Eventually giving up.