1. Ask for the moon 異想天開
Please don’t ask for the moon. We are working on a tight budget.
2. Over the moon 非常開心，快活
She was over the moon when she found out she won first prize in the lottery.
3. Once in a blue moon 少有地
She eats meat once in a blue moon because she does not really like it.
4. Promise somebody the moon 向某人作無法兌現的承諾
She promised them the moon but did not deliver on any of the deadlines.
5. Many moons ago 好耐之前
I went to Paris many moons ago, I’m sure it has changed since then.
6. The moon on a stick 所有想要的野，甚至係無可能得到的
What more do you want from me? The moon on a stick?
7. And the moon is made of green cheese 非常明顯的荒唐事件，唔洗多講都知無可能發生
Jerry said he is going to work over the weekend. Yeah, and the moon is made of green cheese. I will believe it when I see it.