Related Clues:

• This will get your attention
• It may precede the sharing a of secret
• Furtive summons
• Informal greeting
• ''Hey you!''
• ''Watch it!''
• Across-the-room call
• ''Over here!''
• 'What's the idea?!'
• ''Hey, over here!''
• 'Hey you!'
• Whispered sound
• ''Watch it, buster!''
• Street peddler's opener?
• Attention getter