It’s proper not to talk about certain topics in certain company.
Think about how what you would talk about at a funeral, or if you went to your boss’s house for supper.

It’s proper to make sure that you act a certain way in a certain setting.
Think of how you act at a 5-year-old’s birthday party or a wedding.

It’s proper to act a certain way at your workplace.

But what if you broke that pattern today?

Being improper doesn’t mean that you are rude or obnoxious or hurtful. But it could mean that you act in a way that helps others break free to express themselves. If being improper will help others and move them forward – don’t be proper.