why that would be

BS as in Black Sabbath? A little Ozzie Osbourne to keep you warm on a cold winter's night...a stand-in cocoon if you will.

Behind the Wall of Sleep
Black Sabbath 1970

Visions cupped within the flower,
Deadly petals with strange power,
Faces shine a deadly smile,
Look upon you at your trial

Now from darkness there springs light,
Wall of sleep is cool and bright,
Wall of sleep is lying broken,
Sun shines in, you have awoken