Of course it's primarily the drivers job to make sure they don't park illegally, the enforcement is there only to catch those who do not. Setting a disk that states when you got there is not a big requirement but does help make sure some drivers don't overstay on limited parking space.

Driving (or owning) a car is not a common right, it's a proviledge to be earned by being able to show you are responsible enough to steer a vehicle that can very easily end up maiming or killing someone. This is why you need a license to drive and why it is ok to give added responsibilities, like using a parking disc if needed. And if you fail to fill these responsibilities, you should be fined or in more serious cases lose your license.

Could be either, could be a bit of both. Hard to say really. My guess is the last one.

Now go do your chores, you lazy little hottie.

Shh, don't say that. It feels like just a few years at most.