Related Clues:

• Twiddle one's thumbs
• Gathering dust, so to speak
• Sitting on your butt
• Dillydally
• Use a couch
• Grab a chair
• Onetime cohort of Cleese, Palin et al.
• Having no basis
• Ride the pine
• On the sidelines
• Disengaged
• Be in neutral
• A canine command
• Not functioning
• Emulate Whistler's mother