This is a scenic exercise for two people.
The idea is that you never talk about the thing you’re both doing.
So if you’re surgeons, you talk about travel.
If you’re judges, you talk about men you fancy etc.
The physical and verbal worlds of the scene are kept at arms length from each other.
There are a number of ways to do these scenes.
The basic way is described above but there are variations:
Combined with Yes yes YES
The scenes work best when you hardly mentioned what you are doing at all but you can also play with something like a 5%/ 95% split.