Heeey!

Whatcha thinkin'?

This could go either way.

Personal space:  What is it?

What's personal space?

River looks slightly disturbed that Simon keeps using her bum as a pillow/bolster.

Simon doesn't get the concept of personal space.

I told you I could fit!
River looks a bit annoyed with Simon's attempts to occupy the same space at the same time.  I'm honestly amazed that he hasn't fallen sideways through the hole in the cardboard box.  He has good balance!