it just did ok
It is used an ironic expression of total disbelief.
They don't. The expression "when pigs fly" means never because a flying pig is, of course, impossible. Example: "Grandpa will sell that house when pigs fly." Meaning he will never sell the house.ANS2:Pigs don't say they can fly...they don't usually say anything. Cincinnatians perpetuate the myth. See the web site below
They don't have wings.
Actual PigsSometimes it's important to get the pig someplace quickly, usually for breeding. The pig is loaded as cargo on a specific type of plane and flown to meet their date.The Idiomatic Expression"When pigs fly" is a metaphor for saying that something will never occur.Because pigs do not have wings, making it impossible for them to fly (on their own), it is virtually certain that this will not occur. When asked when something is going to occur, the response "when pigs fly" means that it will not ever be done.So the expression "when pigs fly" is the equivalent of saying "it is not going to happen" or "I'm not going to do it."
if pigs could fly
Pigs do not fly.
Pigs cannot fly... Hence the saying "when pigs fly".
The app will come out when pigs fly
When pigs can fly, that'll happen
The speed of mud.
"When pigs fly" is an example of an idiom.
Can pigs fly