Related Clues:

• Sacked out
• Lying without guilt?
• Not yet up
• Reading position, often
• Reading position, sometimes
• Like most people in the middle of the night
• Retired, in a way
• Like Frere Jacques
• Not yet awake
• Still in the sack
• Still snoring
• With "slug," a lazybones
• Horizontal, perhaps
• Under covers
• Like many sleepers