Related Clues:
- Tap-on-the-shoulder alternative
- It ain't exactly "Hey!"
- Sound from a test cheater, say
- Confidential warning
- Signal an OK
- 'Don't tell anyone, but...'
- Hushed ''Hey!''
- Classroom nudge
- Silent 'OK'
- Sibilant call
- Verbal elbow?
- Subtle "Over here!"
- Genesis land
- Start of a library volume discussion?
- "Yo, over here!"