https://www.bbc.co.uk/news/articles/c90z18q2egpo

<quotes>

"You see, there's always a problem with comedy that you deal with the literal-minded," Cleese said.

"I remind you of Till Death Us Do Part," Cleese said, referring to the Alf Garnett, the lead character of the 1960s sitcom who would regularly make highly offensive comments.

"People were roaring with laughter at him, not with him. But there were also people saying 'thank God these things are being said at last'.

"So whenever you're doing comedy, you're up against the literal-minded. And the literal-minded don't understand irony, so that means if you take them seriously, you get rid of a lot of comedy, because the literal-minded don't understand metaphor, irony, comic exaggeration.

"And the result is, if you listen to them, these are people who are not, so far as understanding what human beings are saying and doing, they're not playing with a full deck.

"Literal-minded people can only have one interpretation of what's being said. People who are not literal-minded can see there are different interpretations depending on different contexts."

</quotes>

"Not playing with a full deck" - I guess he can't say "are fucked in the head" or he'd get cancelled.