"He's heavy!"

This is what we heard as we were standing in the kitchen - Josh getting a bottle for Braden as I was gathering things I needed with me at the hospital. As soon as I heard "he's heavy", my heart stopped for a minute and I thought..."how does she know that?"! Well, I ran around the corner, and there was Riley, the proud big sister, carrying her brother...only 10 days old! She had picked him up out of his swing and was carrying him under his arms. I quickly scooped him up from her arms and explained to her that it's not safe for her to carry her brother around as she could drop him. Her response? "But I didn't drop him, mommy!"