I thought R was rolling over because she could flip from her front to her back and her back to her front. Now, I understand that "rolling over" means that I will find her on her belly when I go in the feed her in the middle of the night. It means that she will nurse while trying to roll over and to scoot along on her belly. It means that she will not, ever again, stay in the same place that I put her down. It means that we have to rearrange and R-proof our household, so that all those beautiful, tempting cords are hidden away.
It means that my Baby Girl is mobile, and very, very excited about it.
God help us!