Two old and funny expressions describe something that is the best or finest. Americans might say that something is the cat's meow and the cat's pajamas.

还有两个挺老的挺搞笑的谚语是形容某事是最好的。美国人可能就会说那个是猫咪的猫叫和猫咪的睡衣。

youdao

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

VOA: special.2009.09.27

It was noted that this has "nothing to do" with the scapegoat-of-the-year (Li-ion cells), but if you (or your offspring) just loves to cuddle with this volatile critter, you should probably ice the situation before it unleashes something a bit more serious than a cat's meow.

ENGADGET: Exploding Hello Kitty toys recalled