We didn’t watch it very much but there was an infamous and hilarious one for little money when a contestant was asked for the alternative title for the Archbishop of Canterbury. She was left with two choices: Primate of all England or Marsupial of all England. So she chose.....?
But I wouldn't say that's a categorically easy question for everybody. I find it easy, but I could see how a lot wouldn't find it so simple. If you've never heard of the word 'primate' being used in that context - and don't pick up on the 'prime' i.e. 'first' aspect of it, I can see how your mind could think "OK, so for some reason, the Archbishop shares a title with a class of animal. That in itself is weird, so it could be either of these strange options".
You could have a question abou popular culture, but not everybody is party to that popular culture. If you asked, say, which of these was a popular video sharing website: A. Klip Klop; B. Flip Flop; C. Tik Tok; or D. Nik Nak - tens of millions of people would think that stupidly easy, but a great many older people, even those who use the internet every day, would never have heard of it. I'm not particularly elderly and I've heard of it but I don't know anything about it, how it works or what it's specific USP is.
On the other hand, if you asked what the name of the booby prize on '3-2'1' was, most over 50s would think that a gift question. Anybody under 30, though....
I helped to organise a community quiz last year and one of the questions in a word associaton round I wrote was 'What can go after Time and before Wardrobe'. Most of the women: straightforward; virtually all of the men: not the foggiest.