Related Clues:

• '___! Pass it on ... '
• ''Take your hands off me!''
• Sibilant “Hey!”
• ''Wanna hear a secret?''
• Quiet 'Hey!'
• Hello
• Muffled ''Hey, you!''
• Discreet call
• Verbal elbow
• Surreptitious attention-getter
• Call to attention?
• Long-distance call?
• Subdued attention-getter
• ... a cheater in class
• Word of protest