original surreal art of the phrase when pigs fly describes an impossibility

1600s absurd absurdity adynaton adynatona alternatively ambition animal animals antropomorphic apparently art centuriesold claim crazy derived describes dream dreaming effect failure famous figure finally fly flying forms funny goat goats happen humorous hyperbolic idiom impossibility individual magic magical maximum may miracle music never onlookers original overambition phrase pigs playing proverb references remark reputation sarcastic sarcastically scoff scottish speech succeeds surreal surrealism think thinking though thought thoughts undefined used weird wings