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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:
If this was 3 people who actually knew how to drive then the situation would have never occurred. Someone has pulled out into the path of traffic with nowhere to go, and the other 2 have decided to be petty instead of leave space or reverse and resolve the situation in 5 seconds.