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You can’t gridlock there, mate
(feddit.uk)
For all parking disasters, not just simple bad parking (for that see yplac.co.uk).
Also includes "you can't park there, sir" for the police equivalent.
Rules:
I especially approve of using what looks like PowerPoint to make your diagram
Google slide was the one I had handy while on my sofa, but in principle you’re right as it’s a copy anyway.