脱口说英语口语生活习语 240、not born yesterday

N-5：not born yesterday 可不傻

A:Who broke the glass, Peter?
A:彼得，谁把杯子打破了？

B:The cat.
B:是猫。

A:I was not born yesterday. It must be either you or Adam.
A:你骗不了我，不是你就是亚当。

B:It's me, mum. I'm sorry.
B:是我，妈妈，对不起。