a storm in a teacup字面意思小茶杯里的暴风雨，真实含义是小题大做；大惊小怪。

【例句】
I'm sure it will pass – it's just a storm in a teacup!
我相信这件事情肯定会过去的，只是小题大做而已！

That couple often quarrel, but it is a storm in a teacup.
那对夫妇经常吵架，没什么大惊小怪的。