While cleaning this afternoon, I had Carter in his playpen watching a baby Einstein dvd - and I walked in to find him standing in the playpen - without holding the sides for balance.
Naturally I screamed, "OH MY GOSH YOU'RE SUCH A BIG BOY!" And he took a step towards the side of the playpen where I was standing (and then fell).
I, of course, teared up.
Then he sat in his playpen smirking at me. I wonder if he was thinking, "Now that I am mobile...I fully plan to destroy those fugly red vases in the dining room...what was that vile woman thinking with those?"