Oh yeah? I wasn't born yesterday, you know.

是吗？我可不是三岁的小孩子，你知道的。

Stop pulling my leg! I wasn't born yesterday.

别跟我开玩笑了，我又不是三岁小孩！

Don't give me any excuses. I wasn't born yesterday.

不要给我任何理由，我不是三岁小孩。

Sam: Ok, guys. I wasn't born yesterday. And I am going to play basketball, right now.

山姆：好了。 我又不是三岁小孩子。我要去打篮球了，现在就去！

Oh, come on, I wasn't born yesterday! I know what I'm doing and I'm doing it my own way!

拜托，我又不是三岁小孩儿，我知道我在干嘛，而且我是在用我自己的方式去做的！