At one point we quarrelled, over something silly.

有一次，我们为了一件愚蠢的事争论起来。

《柯林斯英汉双解大词典》

When they say something silly or do something ridiculous, there is always the Internet to spread the news in minutes and keep their "story" alive forever.

一旦他们说了一些愚蠢的话、或做了一些荒诞的事，网络总是能在瞬息间把这件事传遍，他们的“黑历史”也就永远无法抹去了。

youdao

Never do silly things like burp or pour gravy on your fingers or something silly.

吃饭时不要做些像打嗝或将肉汁倒在手指上与其他一些滑稽的事情。

youdao

What, have I done something silly?

我是不是犯了什么错？

麻省理工公开课 - 热力学与动力学课程节选

When something silly is taken for true, challenge those who believe as well those who mislead.

FORBES: Brand Power: Street Cred Comes First

Nothing travels faster than when a big company does something silly or inappropriate.

FORBES: Brand Blunders

Admittedly, there is something silly about the whole pen discussion.

FORBES: The Pen Is Mightier Than the Scold