Related Clues:

• Note-passer's utterance
• Hissed "Hey!"
• ''Hey, mister!''
• Hissed "Yo!"
• Hushed 'Hey, you!'
• ''Hey, over here''
• ''Ahem!''
• ''Check this out!''
• Whispered ''Hey!''
• Secretive ''Hey, buddy!''
• Library attention getter
• Furtive attention-getter
• Alternative to 'Hey!'
• Soft "Over here!"
• Cheater's sound during a test