Double Dose of Giggles

The twins refuse to sleep in beds. Even when I try to put their mattress on the floor, they won't sleep on it. They sleep on the ground, without pillows. It's all I can do to keep them off the carpet.
Tonight, they were just giggling to no end, so I snuck in to see what was up and this is how I found them. Just making faces at each other, holding hands, and cracking up. And people wonder why I have a hard time separating their bedrooms.... ;)