I was looking through some old notes and found these quips:

O: Mommy, why are you going crazy? Because you're small-minded?

Me: My suggestion is that we take a nap.
O: Well, my suggestion is that I'm not tired.

O: Really you're wearing that shirt? Oh mommy, it just doesn't look girlish.

And, of course, the classic which I've probably already posted:

O: This best day ever isn't going so good.