Related Clues:

• 'Hey ... have I got a deal for you!'
• "May I get a word in?"
• 'Yo!' alternative
• Soft "Hey you!"
• Subtle "yo!"
• ''I've got a secret!''
• "Pardon me . . ."
• ''Over here!'' whisper
• Whispered summons
• Kin of 'ahem'
• Attention-seeker from area on border
• "Pardon me ... "
• Sound before passing a note in class
• ''Hey, you!'' sound
• Sound of a forced cough