Related Clues:

• Pulled a Van Winkle
• Failed as a night watchman
• Assented, in a way
• Agreed
• Caught some zzz's
• Signed an agreement?
• Went undercover?
• Drifted off
• Crashed, so to speak
• Was dead to the world
• Logged some Zs
• Took a siesta
• It comes between Washington and here
• Went out for a while?
• Grew sleepy