You guys need to stop.
What are the reasons we need to stop?
It's your way of being nice, and not everyone needs to do it in such a way.
Generally you shouldn't prevent others from doing things. There doesn't seem to be a good reason for it in this case.
We need to prioritize safety, and being nice like that can jeopardize it.
If you want to be cryptic about what you are referring to you should stay out out it. You need to set clear cut rules if you want to uphold them, people need to know what is acceptable.