要知道，我并不傻！

I'm not stupid, ___you ___know!

要知道，这应该是她生日的一个惊喜。

It's, ___you ___know, supposed to be a surprise on her birthday.

这真的，要知道，是个非常糟糕的主意。

It's just, ___you ___know, a really bad idea.