Related Clues:

• Attention-getting call
• 'Now listen!'
• "Hold on!"
• "You, there!"
• "Howdy!"
• "Listen!"
• Word of greeting
• Tripled, Yogi Bear's catchphrase
• "Yo!"
• "Watch it!"
• With 53-Across, a Beatles song
• 'Howdy!'
• "Get your hands off me!"
• 'You listen to me'
• "You there!"