The mysterious sign

The above sign has hung on the door of my sister's room for as long as I can remember. Even when we moved overseas, it came with us, proudly displayed upon the doorknob.

At a glance, there's nothing too odd about it. As you can see, Mario is rudely barring entry, under the pretense that a Nintendo game is in progress. Is it Super Mario Bros.? Ocarina of Time? Tomodachi Life??

We may never know, but fair enough. We can't go in, because there's some serious Nintendo-ing going on in there. Should we interrupt, who knows the catastrophic consequences that could befall us? For all we know, Andross will destroy the galaxy, and frankly, that's not a risk I'm willing to take.

However, the sign then takes a turn most sinister...

Ehh??!! The other side says 'do not disturb'? What sorcery is this?! For one thing, it makes me assume that the Nintendo game that previously took place is some serious shit (fastest times in Diddy Kong Racing or similar), to the point where the occupant must be alone to recover. But more importantly, it begs the question: when can you actually enter the room??

Either an important Nintendo game is in session, or you are forbidden from disturbing all who dwell within. The end result is you, as the outside door dweller, are left to feel most unwelcome. All my childhood, this was my fate, coupled with a literal stop sign that was later lost somewhere in the folds of time. It's no wonder I have serious abandonment issues to this day. Fuck you, door, you're the genesis of my failures.