Related Clues:

• Rider's way to attract attention, making this sound?
• Noise to attract attention
• Notice me polishing small silver tray for starters
• Attention-seeking noise
• Here, furtively, is ship entering port
• "'Sup"
• Quiet attention seeker stops stealing bottles
• Quieter "Looky here!"
• "Hey ... over here!"
• 'Hey, I've got a secret ...'
• Cousin of "ahem"
• Conversation starter of a sort
• "Hey . . . over here!"
• Surreptitous sound
• Low 'Yo!'