如果豬會飛
豬會飛嗎？你見過會飛的豬嗎？英語中有個俚語叫做Pigs might fly，字面意思就是豬可能會飛。但是，豬壓根兒不會飛，那為什麼說豬可能會飛呢？
Pigs don't fly. So we say "pigs might fly" when there is no chance of something happening at all(British, American & Australian, informal, American, informal).當我們想表達一件不可能發生的事情時，就可以用pigs might fly這個成語。
據辭源介紹，俚語Pigs might fly或There's a pig flying by源於蘇格蘭諺語"Pigs fly in the air with their tails forward"(字面意：豬在空中倒著飛；比喻意：絕對不可能發生之事)。諺語認為：即使發生奇蹟，豬飛了起來，但若讓豬倒著飛，那肯定百分之百實現不了。
例句：
A: I bought a lottery ticket yesterday.
B: Just think, you could buy a new sports car.
A: And I'd buy a house in Hawaii... and pigs might fly!
A: Look... Brad Pitt…he is just gorgeous.
B: Why can't a man like that ask us on a date?
A: Yeah pigs might fly!
哈哈，兩個人在幻想彩票中獎後的美事，雖然她們自己都覺得這些是不可能發生的事情。
又如，you're running a marathon for the first time and you're not a very confident runner. A friend says to you--how long do you think it will take? Four hours? You would say--and pigs might fly because you know there is no chance of that happening.如果不擅長長跑的你參加馬拉松賽跑，一個朋友說你在四個小時內可以跑完，這時你就可以說pigs might fly，因為你自己知道這絕對不可能！
其實中文裡也有一個相似的表達，那就是太陽從西邊出來了！因為太陽永遠不會從西邊出來！下次若朋友提出什麼荒誕建議，你就可以說「除非太陽從西邊出來」，或者大手一揮朝向窗戶，隨聲驚呼"Look!There's a pig flying by"！