"if pigs had wings" in Chinese (Simplified)
除非母猪会飞（形容不可能的事）
Definition
幽默地表达某事不可能发生或极不可能；用于说永远不会发生的事情。
Usage Notes (Chinese (Simplified))
该表达属于口语幽默，经常用来回击不切实际的想法。常与中文的“除非母猪会上树”或“太阳从西边出来了”等不可能的表达相似。
Examples
That will happen if pigs had wings.
那会发生，**除非母猪会飞**。
He’ll clean his room if pigs had wings.
他会打扫房间，**除非母猪会飞**。
You’ll see him on time if pigs had wings.
你会准时见到他，**除非母猪会飞**。
“Maybe she’ll lend you her car.” “Yeah, if pigs had wings.”
“也许她会借你车。” “呵呵，**除非母猪会飞**。”
“Will we ever get Friday off?” “Sure, if pigs had wings.”
“我们会有周五假吗？” “当然，**除非母猪会飞**。”
He’ll apologize first? Only if pigs had wings!
他会先道歉？只有**除非母猪会飞**！