163,989
@Cz
That's generally why those things are even on there.
People's kids tend to get stuck in bathrooms because they forget how to open the thing, or just people in general when they pass out there for whatever reason, so you kinda wanna have a way to unlock a bathroom door with a screwdriver, if you have to.
It would've been creepy if the marks weren't there when you moved in, though... >_>