Sleep with your hands above your head. That's right - And let no evil thoughts pollute the dark.

Boredome.

For I know hide-and-seek's most secret places
More than your sisters do. And you and I
Can scramble into them and leave no traces,
Nothing above us but the twigs and sky,
Nothing below us but the leaf-mould chilly
Where we can warm and hug each other silly.

- Narcisus by John Betjeman