Cassies new thing

Well just to show you guys, Cassie is all over the place. Here she is running after me trying to get the camera.

Thats not what I'm writing about though. She has a noise (like a whistle)she does now all the time. She puts her mouth in this big "O" shape and sucks in. It sounds like wind going through a cave. It cracks her up! She'll make the sound and then just laugh hysterically. The noise isn't so amusing but the laughter afterwards makes Derek and me fall on the floor. It's so funny