I wasn't born yesterday 我可不傻
                  李华（LH）和Larry（LL）讨论情人节的安排。
                  LL: So, Lihua, I know you said that you didn't want me to buy
                  a Valentine's Day gift for you, but I wasn't born yesterday. I
                  can tell you're expecting something romantic.
                  LH: 我情人节唯一的愿望就是能跟你一起渡过！我们可以一起做晚饭，然后去看电影。你刚才说自己wasn't born
                  yesterday是什么意思啊？
                  LL: Saying someone was born yesterday, means that they are
                  very easy to fool. I said that I wasn't "born yesterday"
                  because you can't fool me.
                  LH: 我知道了，说什么人was born yesterday意思就是说这个人容易受骗，有点象中文里说的“三岁小孩。”
                  LL: That's right. Even though you won't admit it, I think you
                  would love to receive some flowers or chocolates for
                  Valentine's Day.
                  LH: 你心真细！不过，我确实不想要什么礼物，跟你在一起就足够了。不过你别生气，我可不是说你傻。
                  LL: No, you didn't call me foolish. In the US, stating that
                  you "weren't born yesterday" is a way to joke around with
                  friends. If you say that you "weren't born yesterday," you're
                  expressing that you aren't gullible.
                  LH: 我明白了，you said you weren't born yesterday
                  ，是因为你觉得我肯定想要你送情人节礼物给我。
                  LL: We both know I wasn't really born yesterday. What I meant
                  was that I have known you for so long that I can tell you are
                  looking forward to a romantic Valentine's Day gift.
                  LH: 你可真够固执的。那你说，born yesterday什么时候才会带有贬义呢？
                  LL: If you are speaking with someone, for example one of your
                  students, who don't know who Zhang Ziyi is, and you say 'Were
                  you born yesterday? She's a famous Chinese movie star!
                  LH: 那别人肯定会不高兴。这就等于是说，你怎么连这都不知道！
                  LL: That's right. Asking someone if they were "born yesterday"
                  implies that they misunderstood a subject that is rather
                  simple to understand or that is common knowledge.
                 

I wasn't born yesterday 我可不傻
                  李华（LH）和Larry（LL）讨论情人节的安排。
                  LL: So, Lihua, I know you said that you didn't want me to buy
                  a Valentine's Day gift for you, but I wasn't born yesterday. I
                  can tell you're expecting something romantic.
                  LH: 我情人节唯一的愿望就是能跟你一起渡过！我们可以一起做晚饭，然后去看电影。你刚才说自己wasn't born
                  yesterday是什么意思啊？
                  LL: Saying someone was born yesterday, means that they are
                  very easy to fool. I said that I wasn't "born yesterday"
                  because you can't fool me.
                  LH: 我知道了，说什么人was born yesterday意思就是说这个人容易受骗，有点象中文里说的“三岁小孩。”
                  LL: That's right. Even though you won't admit it, I think you
                  would love to receive some flowers or chocolates for
                  Valentine's Day.
                  LH: 你心真细！不过，我确实不想要什么礼物，跟你在一起就足够了。不过你别生气，我可不是说你傻。
                  LL: No, you didn't call me foolish. In the US, stating that
                  you "weren't born yesterday" is a way to joke around with
                  friends. If you say that you "weren't born yesterday," you're
                  expressing that you aren't gullible.
                  LH: 我明白了，you said you weren't born yesterday
                  ，是因为你觉得我肯定想要你送情人节礼物给我。
                  LL: We both know I wasn't really born yesterday. What I meant
                  was that I have known you for so long that I can tell you are
                  looking forward to a romantic Valentine's Day gift.
                  LH: 你可真够固执的。那你说，born yesterday什么时候才会带有贬义呢？
                  LL: If you are speaking with someone, for example one of your
                  students, who don't know who Zhang Ziyi is, and you say 'Were
                  you born yesterday? She's a famous Chinese movie star!
                  LH: 那别人肯定会不高兴。这就等于是说，你怎么连这都不知道！
                  LL: That's right. Asking someone if they were "born yesterday"
                  implies that they misunderstood a subject that is rather
                  simple to understand or that is common knowledge.