One “hey, not cool” from a friend lands harder than any rule a teacher could pin to the wall.

Rules from adults are easy to file as adult noise. A friend saying it comes from inside the group, and what your people think is okay is what actually governs a room. It is also brief, which makes it land instead of triggering an argument. Three words from a peer can end something a poster never touched.

If something goes past the line this week, say the short version rather than nothing. You do not need a speech, and usually someone was waiting for a person to go first.