Peek-A-Boo

I was shopping for a gift for Taurin's birthday with my sister.  We were browsing the toy isle and we see a cute baby sitting on the shelf.

As we get a bit closer all of a sudden and quite fast she goes:

And says, "Where are you? Peek-a-boo!"

We were both totally caught off guard.  It was kind of creepy.  She had a motion sensor so you never knew when she was going to do it.  We were laughing so hard because we were trying to get her to do it again and we were waving our hands in front of her face and poking at her. Then she'd surprise you by pulling up the blanket real fast.  

What happened to just a good old fashioned baby doll?