Related Clues:

• Bedmate's bane
• Cause unrest?
• iPod sound?
• Nocturnal din
• Vowel sound of "bite"
• Source of spousal angst, nocturnally
• iPhone feature
• Make noises while napping
• Make sound asleep?
• 'Gawwwd, how boring'
• "Gawwwd, how boring"
• Sleeper's rumble
• Second in line?
• ''Zzzzzz'' sound
• [Bo-o-o-oring!]