When I was a girl, my father taught me why fire trucks are red. Of course, now that fire trucks come in yellow and white colors too, this story will eventually need an upgrade.
Fire trucks are red because:
They have 4 wheels.
4 x 3 is 12.
12 inches is a ruler.
Queen Mary was a ruler.
Queen Mary was a ship.
Ships sail the seas.
There are fish in the seas.
Fish have fins.
The Finns fought the Russians.
Russians are Red.
And fire trucks are always rushin’;
That’s why fire trucks are red.