when pigs fly
used to say that one thinks that something will never happen.
If you say 'when pigs fly' after someone has said that something might happen, you are emphasizing that you think it is very unlikely.
hallstatt
Examples
1. Her crazy mother said that being so lazy, Megan is going to be rich one day for sure and without any hard working job. Come on, when pigs fly!
2. I asked my boss if I could go on a two month vacation, he said yes, when pigs fly!
3. I think he'll pay you back your money - when pigs fly.
4. "I think I'll start working on my project from tomorrow." "Yes, and pigs might fly."
5. "Do you think our team will win the competition?" "Yes, flying pig."
6. John asked Sarah whether she would go to the movies with him, Sarah replied that would happen when pigs fly.
7. He plans to clean his house every week, but he will probably do it only when pigs fly.
8. "Someday, I'll become a successful actor." "And pigs might fly."
9. I'll join your physics classes when pigs fly.
1. 她瘋狂的母親說，梅根是如此懶惰，肯定會在沒有任何辛勤工作的情況下有一天變得很富有。除非太陽從西邊出來！
2. 我問我的老闆我可以去兩個月假嗎，他說除非太陽從西邊出來！
3. 我想他會還你錢這件事上，絕無可能。
4. 「我想我將從明天開始從事我的項目。」 「絕無可能」
5. 「你認為我們的團隊會贏得比賽嗎？」 「除非太陽從西邊出來」
6. 約翰問薩拉（Sarah）是否願意和他一起去看電影，薩拉回覆說除非太陽從西邊出來。
7. 他計劃每周打掃房子，但他覺得除非太陽從西邊出來。
8. 「總有一天，我會成為一名成功的演員。」 「絕無可能。」
9. 除非太陽從西邊出來，我會參加你們的物理課。
Whatever happens tomorrow, we had today.
不管明天會發生什麼，我們還有今天。