A Fish Swims In The Ocean, Unless on the Sidewalk

From an old Three Stooges bubblegum card:

Q. Why are fire engines red?

A. Fire Engines are red because fishes swim in the ocean and fishes have fins, the Finns fought the Russians, the Russians are Red and Fire Engines are rushin' all over.

When I queried the sound man and a gaffer about what was being filmed, I was given the answer of "a short". When I asked: "How short", I received no response.

This is my first installment of parts unknown.

I've hear of Day for Night, but Sidewalk for Water?

In Wreath "Beware Attack Dog" and Merry Christmas