When two or more people meet and start to talk about others who are not in the room, it's gossip.
It may seem fun for a while but in reality, it only satisfies our inner dragons which trie to stop us from doing the work we were put on this earth to do.
After 15 minutes of such conversation we feel drained, waisted, exhausted, and knowing that those 15 minutes might have been used to create something which might change people for the better.
Run from these people.
Run to the organ bench.
PS If you do need to talk to these people, talk about them.