Pavement Blocker
In some cases, you shouldn’t waste your time and energy on people who aren’t interested in learning. That’s why we never made it past the sixth grade. Someone left a note reminding the obnoxious driver of this car not to block the pavement. They didn’t need to provide a reason since it’s pretty much a well-understood concept.

We’re not sure how effective it was, given the car owner’s tendency to block the pavement and their obvious lack of attention. Is it possible that something a little more inventive might have helped the information stick? Perhaps popping a tire or two? Just kidding—don’t do this.