It happened

I just put Carson down for a nap and could hear him in his room making his usual grunting sounds signifying that he was not asleep. So I peaked in and saw him STANDING UP in his crib. He pulled up using his bumper, and then grabbed the ledge. Eventually Carson saw me, flopped down on his bottom and started laughing and bouncing up and down. Number 1 on tonight's to-do list: lower the mattress.