Related Clues:
- Cobra's warning
- Draft lottery org
- Expression of dissatisfaction
- Leak indicator
- Greeting some of Hitler's men showing contempt?
- Make disapproving sound
- Man's direction to express disapproval
- Audio interference
- Snakelike noise
- Wordless sound of disapproval
- Show disapproval of interference
- Urgent whisper greeting snakes, requiring evacuation?
- Sound of escaping gas
- Son welcomed by greetings, but one less welcome sign?
- Sound of warning