I believe binkies keep you safe.

Zoe - Look at me!  Aren't I just the cutest thing you've ever seen?

Ana - Um, yeah... I'm not so sure about that.  I see that glint in your eyes.  I think I know better.  I just feel safe standing this close to you right now because I have this binky in my mouth.  And these 4 binkies in my right hand. Oh, and this 1 extra one in my left hand.

Zoe - No... really?  See?  I'm so cute.  The pose totally shows you how sweet I am.

Ana - No!  Wait!  What are you doing?  Back off!  I will totally use these binkies to protect myself! Zoe - Really... I promise... I'm being a nice big sister today.

Ana - OK, fine.  But only because I've got all these binkies.