WHEN PIGS FLY / KUN LEHMÄT LENTÄVÄT / КОГДА РАК НА ГОРЕ СВИСТНЕТ, или ПОСЛЕ ДОЖДИЧКА В ЧЕТВЕРГ
If pigs could fly, I’d fly a pig
To foreign countries small and big.
To Austria where cowbells are ringing,
To Germany where people are singing.
To Italy and Spain,
and then come home again.
"When pigs fly" is an adynaton, a figure of speech so hyperbolic that it describes an impossibility. It is a way of saying that something will never happen. The phrase is often used for humorous effect, to scoff at over-ambition. There are numerous variations on the theme; when an individual with a reputation for failure finally succeeds, onlookers may sarcastically claim to see a flying pig. ("Hey look! A flying pig!") Other variations on the phrase include "And pigs will fly," this one in retort to an outlandish statement.
An example occurs in the film The Eagle Has Landed: an Irish secret agent working for the Nazis replies to a German general speaking of Germany's shortly winning World War II, "Pigs may fly, general, but I doubt it!" Later, when the Irishman sees German soldiers parachuting before an attack, he says to himself, "Mother of God! Flying pigs!"
Similar phrases in English include "when hell freezes over", the Latin expression "to the Greek calends," and "and monkeys might fly out of my butt", popularized in Wayne's World skits and movies. They are examples of adynata. In Finnish, the expression "kun lehmät lentävät" (when cows fly) is used because of its alliteration.
In Polish, a similar expression is "See a tank rolling in here?", while simultaneously lowering a lower eyelid with a finger. Sometimes, when in return to this a slightly more limited, but still improbable answer is given, the speaker repeats the gesture, stating: "Maybe at least a gun barrel sticks out?":
• "I'm sure that the cows will make a permanent colony on the Moon by the end of 2012."
• "Yeah, sure. See a tank rolling in here?" (lowering the eyelid)
• "Well, maybe not 2012, but 2013, surely."
• "Maybe at least a gun barrel sticks out?" (repeating the gesture.)
The idiom is apparently derived from a centuries-old Scottish proverb, though some other references to pigs flying or pigs with wings are more famous. At least one appears in the works of Lewis Carroll:
"Thinking again?" the Duchess asked, with another dig of her sharp little chin.
"I've a right to think," said Alice sharply, for she was beginning to feel a little worried.
"Just about as much right," said the Duchess, "as pigs have to fly...." — Alice's Adventures in Wonderland, Chapter 9.
American literature author John Steinbeck was told by his professor that he would be an author when pigs flew. When he eventually became a novelist, he started to print every book he wrote with the insignia "Ad astra per alia porci" (to the stars on the wings of a pig).
