Permanent URL: https://mezzacotta.net/postcard/?comic=2234
Denying any responsibility for this is: The Thinker
The author writes:
For a practical joke, one of our technicians rigged all the machines at the local laundrette to take only gold bullion as payment. If I recall, this was shortly before that lorry travelling from the local gold refinery spilled its load all over the high street.