Related Clues:

• Sacked out
• Lying without guilt?
• Not yet up
• Reading position, often
• Abed
• Reading position, sometimes
• Like most people in the middle of the night
• Retired, in a way
• Still snoozing
• Like Frere Jacques
• Down for the night
• Not yet awake
• Still in bed
• Still in the sack
• With "slug," a lazybones