Related Clues:

• 'Gabba Gabba ___'
• ''Ahem!''
• ''Check this out!''
• Breezy greeting
• Whispered ''Hey!''
• Secretive ''Hey, buddy!''
• Library attention getter
• Furtive attention-getter
• Alternative to 'Hey!'
• Soft "Over here!"
• Cheater's sound during a test
• Hushed "Hey!"
• ''Hey!''
• It ain't quite "Hey!"
• ''Hey!'' in a library