This is the second mind map on this list but it’s even more intricate. This passive-aggressive person went to the next level and put a lot of work into this message. They’re tired of their colleagues using a meeting room without booking it. The same workers likely complain when they leave.
However, someone trolls them with an antagonistic response. We see how they write, “This is also another useless sign.” We imagine that there was a lot of negativity in the office after this went up. Imagine the tension between the rival factions over the rightful use of the meeting room (via Springboard).