This is like a whole new frontier in being a parent. Before, he was loud, he was screamy, he was barfy and poopy, but he was stationary. If you needed to go to the bathroom, or to the kitchen to fix a bottle, we could trust him in the middle of the bed, or on the couch, or on the oversized ottoman. We can't do that now. And this is just plain terrifying.
The closest we've come to baby-proofing the apartment to this point was to put the lube in a drawer, and now everything has to be thought about. Shoes in the entryway? Nooooooo. Don't put your pants on the floor, dad. And careful with the TV, Dave. Babies love to play with those.
Stupid growing-too-fast baby.