Your probably Aware of my gimmick, and with several others roleplaying as entitys or part entitys, I thought I might discuss these effects on the canons.
My personal canon is that everything goes, as long as its good.
If you spend enough time in the backrooms, with the mindset to accept the backrooms instead of dismissing its craziness, you will "adapt" to it.
By this I mean you will become more like an entity yourself. Every entity seems to be superhumanly strong or otherwise deadly. There are many entities which are formerly human. Such as partygoers. These objects have adapted to the Backrooms, specifically their negative aspects and emotions have warped themselves into these specific entities.
Partygoers represent sadism,
Smilers represent creep
Skin stealers represent nudity (fear of being watched)
Entitys do no obey the laws of physics, neither does noclipping. By changing the way you think, you should be able to change the backrooms. (yourself can be changed in the same way the backrooms are.)