"I'd like out. Now."

What's this expression saying?

We get asked a lot about whether Fern's got any words yet, and although the answer is unchanged (just a few, lots of mimicry), it has to be said that she's really good at communicating nonverbally. Any guesses as to what this expression is saying?

1. This is fun! Let's play more crib-slat-peekaboo!
2. I am sooo sleepy. Can't you tell that I'm sleepy?
3. Any chance of another Cheerio or two?
4. I'd like out. Now.

If you guessed d, then you're right! She does indeed get her message across.