I'm very curious about this. It's illustrated by MAD Magazine artist Tom Richmond, who I've been following for a while and whose "how to" book on Caricature has been very helpful to me. He's adopting a "cute" style for the "Goodnight" book, but his usual style is more in the Mort Drucker/Jack Davis mode.
Like this one:
"You were right again, Batman. We might have been killed."
"Or worse."
This has probably been discussed before, but how did they achieve all those colored "gases" they used on the show? Sometimes (as in the O'Hara image above) it looks like what's being shot into actor's faces is something akin to talcum powder. Is it? And if so, wouldn't that be dangerous? What if the actor forgot to breathe out at the right moment? Couldn't they aspirate a fine powder like that and if they did, wouldn't it injure their lungs?
Dangerous or not, that stuff looked decidedly unpleasant to have on your face.
"You were right again, Batman. We might have been killed."
"Or worse."