Related Clues:

• 'Um, I hate to interrupt ...'
• It may turn some heads
• "Psst" alternative
• Pause filler
• Subtle attention getter
• Bridge call
• "Hey, you!"
• Nautical greeting
• Furtive whisper
• 'Hey, sailor!'
• [Look over here!]
• Sotto voce call
• "Excuse me"
• 'Anyone home?' call
• Subtler alternative to 'Yo!'