Related Clues:
- Dormitory echo
- 'This is boring!'
- Tedious lecture, e.g
- Sound made by sleeper
- Make noises sleeping
- Noise made while asleep
- It's the last thing one wants to hear at night in broken Norse
- A whistle may follow it in cartoons
- Annoying sleep sound
- Annoyed about note that's heard in the night
- "SKN-X-X!" in comics
- One way to annoy one's spouse
- Certain night noise
- Boring thing, so to speak
- Poles stoned and sound asleep!