WHEN PIGS FLY

Where does this old saying come from...Any ideas?

When pigs fly

No idea towards when it was originated, but it doesn't "come from" anything, it's just a way of saying never. Pigs will never fly. Simple as that. Although I'll bet Bruce Kahl will jump in and prove me completely wrong with some publication excerpt!

Replies

See also: the meaning and origin of 'when pigs fly'.