Americans might say that something is the cat's meow and the cat's pajamas.

VOA: special.2009.09.27

So, you take a sentence like -This is a classic line from Groucho Marx: "I once shot an elephant in my pajamas.

举例来说,这是《格劳乔·马克斯》的经典台词,"我曾在我的睡衣里射杀了一头大象

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How it got into my pajamas I'll never know."

至于它怎么进来的,我就不知道了"

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