When someone says, “when pigs fly,” they mean that something is very unlikely to happen or is nearly impossible. It’s a funny way to say “that will never happen” or “it’s highly unlikely.”
Here are two examples in sentences:
Example 1:
Tom said he would clean his room without being told, and his sister laughed and said, “Yeah, right, when pigs fly!”
Example 2:
My dream is to own a mansion on the moon, but I know that will probably happen when pigs fly.
Now, let’s see two examples in a conversation:
Example 3:
Lisa: Hey, John! Do you think you’ll ever stop eating junk food?
John: Probably when pigs fly, Lisa. I just can’t resist a good burger!
Example 4:
Mike: Hi, Sarah! I heard you want to become a world-famous singer.
Sarah: Yeah, Mike, that’s true. But I think it will happen when pigs fly. I’m way too shy to perform on stage.
To sum it up, the phrase “when pigs fly” is a humorous way to express that something is unlikely to occur. It’s used when the chances of a certain event or action happening are considered incredibly slim.