Related Clues:

• 'Um, I hate to interrupt ...'
• It may turn some heads
• "Psst" alternative
• Pause filler
• Subtle attention getter
• "Hey, you!"
• Furtive whisper
• [Look over here!]
• Sotto voce call
• "Excuse me"
• Subtler alternative to 'Yo!'
• "Hey you!"
• Clearing, of sorts
• 'Hey, buddy'
• "Excuse me ..."