Babies can sleep anywhere

I was getting in the shower one morning and the boys looked so cute sitting on the bed together that I decided to snap a couple pictures.

And this is what I found when I got out of the shower. Notice his head is even on a toy. Why is it that babies can fall asleep in awkward positions like this at the drop of a hat but when you want them to fall asleep, like at church, they refuse to give in?