Usually means "get out of bed", particularly after intercourse.
It means your gonna get layed
a sack that carries things like a rack
She got mad.
i know 'pilfer a sack' comes from baseball and to pilfer means to steal. So I'm guessing that to 'pilfer a sack' means to steal a base.
"You're a demon in the sack" means you're an excellent lover and will definitely satisfy during sexual excursions.
Oliver Sacks on Manipulating the Brain
Oliver Sacks on Charles Darwin
How to Make the Egg Spawn Sacks Fishing Fly Part 2/2
How to Make the Egg Spawn Sacks Fishing Fly Part 1/2