<P> 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 : </P>
<P> 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 : </P>
where did the phrase when pigs fly come from
where did the phrase when pigs fly come from
Scottish proverb
Scottish proverb