請問,”好天真好傻”呢句話,英文應該點講?

In my transferring method, I would write it like this:
So naive and foolish.
圖片參考：http://tw.yimg.com/i/tw/ugc/rte/smiley_13.gif

too ionocent ,sometime naive

2008-09-30 20:53:04 補充：
innocent

1.very innocent very silly
2.so innocent so silly
3.ho tin zan ho sor

So stupid, so naive

so naive ,so stupid