What's the most BORING subject people can bring up?

[NewYorkFirstTimer]

Inspired by another thread. Of all the subjects someone can bring up in conversation what's the one that makes you want to roll your eyes so far back you can see behind your brain?

Light-hearted of course

House prices
schools
running

I once got stuck at a table at a wedding reception with someone 'in computers' who spent the entire 5 or 6 courses (including the speeches) reagling us with tales of how the new thing in gaming would be 'grey gamers' and that all people over the age of 50 would soon be as obsessed with gaming as everybody else, and would all be spending their retirement playing computer games. And on and on and on.
Thank God I had an endless supply of food and drink to keep me going.

Didn't anybody just...interrupt?

Dreams
cute things their kids say 🥱
’funny’ their kids say🥱🥱
how incompetent their husbands are and how funny that is 🥱🥱🥱

Yes, of course they did. But he just kept going...

The pregnancies of random people I only vaguely know. I really don't give a shit about them being pregnant or about their impending offspring.