Twin 21-month-olds

We thought once we were through the first year with twins it was going to get easier. We've since learned, that was the easy part. Since the girls have hit 18 months, things have been very exciting around our house. They refuse to let anyone else dress them. They push chairs around the kitchen and carry stools around to get into things we would obviously not let them into. They refuse to keep their diapers on and are constantly pulling down their pants.
The girls are already good at entertaining each other. Like when the bathroom door is left open and they climb into the sink, turn on the water, and scream for someone to come save them. Or when they splash in or throw things into the toilet. The best toilet moment has to be when Hadley found a spoon and helped herself.
Since the weather has warmed, we thought there would be less chaos as we could spend more time outside. Unfortunately, the girls figured out how to get out of the fenced backyard and enjoy running, head over shoulder, and laughing as we chase them. To be sure we're appropriately frazzled, they run in different directions.
We do hear from other twin parents that it gets easier... you just have to make it to age five!