Sleep with rocks?

Sleep on rocks you say?

Yes, sleep on rocks the day away,
Sleep on pebbles arranged in levels;
From large to small, or great to slate.

Sleep on boulders, and great rollers,
Stones of granite, found here on this plant,
From Mars, the Moon, or planet Dune
But better still, found on a hill.

Sleep on mountains with great fountains,
On hills of slate that cumulate,
On Rocks which are round, profound, and found on the ground,
On heavy or soft, rocks jagged to zig-zagged,
All rocks, but not ones found in socks.

If you sleep on rocks,
you shall not be mocked,
For when you awake, with your great pain,
No bed, nor surface will you hate,
Since they would not make you grate
As rocks did as of late, to put you in that painful state
How comfy every-thing would be,
No rock, no problem, it’s comfy to me.