Related Clues:

• Not working today
• A serious one may be red
• Storm warning
• Daydreaming, say
• Held in reserve
• Emulate Paul Revere
• Eric featured in "Monty Python's Personal Best"
• "Fore!" for one
• Asleep, say
• Loitering
• Put away for later
• Available if needed
• Give a heads-up to
• Readiness condition
• Yellow flag