That's just an old wives' tale!

那就只是个老妇人讲的故事。

That's just an old wives' tale.

那只是老太婆的传说。

It's like the old wives' tale where you die in your dream…

那老巫婆的故事…死在自己的梦里。

'Constant jumping makes you grow taller' is an old wives' tale.

不停地跳能让人长高的说法纯属无稽之谈。

I did not trust the information because it might be old wives' tale.

我不相信这资料，因为可能是无稽之谈。