Alternately the left side of it is wedged because of the bannister it’s butted into.
The stairs show a kick pattern and the paint appears broken linearly due to the movement of the carpeting when kicked. (Alternately it could be from top pressure when stepped on, the paint wants to stick to the wall not the step so 50/50)
The mattress itself appears to bulge towards the viewer.
It’s all about perspective, that’s the whole point of the picture.
I see evidence for it being at the top, you see evidence for otherwise and lots of folks show how little they’re able to regulate their emotions through simple friendly discussion ( not directed at you, my dude )
These have been around for a long time as DIY filters for folks, I remember seeing one of these on Reddit before comments were a thing.
Once upon a time Reddit drove you to interact with other websites instead of shitposting your best hot take about the title of the post someone else didn’t even visit.
They were covered as preventative care