Related Clues:

• Nighttime annoyance
• Yawnfest
• Uninteresting experience
• Make some z's
• Take a sleep breath?
• Embarrassing sound in a lecture hall
• Bother for a bedfellow
• 'Bo-ring!'
• Bedroom noise
• [What a snoozefest!]
• Dormitory disturbance
• [This couldn't be more boring]
• Dagwood's "SKNXX-X"
• Wake a bedmate, maybe
• Pan sound