When it gets cold...
15°C: Spaniards wear caps, gloves and winter coats, Finns are sunbathing.
10°C: French desperately try to get their central heating on. Finns plant flowers. Italian cars won't start. Finns drive with convertibles.
0°C: Pure water freezes. Water in river Vantaa (in Finland) thickens a bit.
-5°C: First people are found frozen in California. Finnish midsummer festival ends.
... -10°C: Scots turn the heat on in their houses. Finns start to use long-sleeve shirts.
-20°C: Swedes stay indoors. Finns are having the last barbecue before winter.
-30°C: Half of the Greek people have frozen to death. Finns start to dry their laundry indoors.
-50°C: Polar bears evacuate North Pole. Finnish army starts its winter training.
-70°C: Siberian people are moving to Moscow. Finns are furious since the Koskenkorva booze can't be stored outdoors anymore.
-273°C: Absolute Zero. Finns admit that it is quite cold outside.
-300°C: Hell freezes over. Finland wins the football World Cup.