In Sweden at the crayfish festival: The table is set for a crawfish party when someone remarks: "In some parts of China, dogs are considered a delicacy" "Really? The Chinese have quaint food habits, don't they?"
Meanwhile in China at the dog-festival: "In Sweden they eat crayfish. Some even eat the poo-string." "Really? The Swedes have quaint food habits, don't they?"
The nicest touch is that the sing the Chinese supermarket workers are singing, is set to the melody of "små grodorna", another Swedish phenomena, often mocked in ads. Like this one Ikea: Midsummer in Sweden / Små grodorna.