Related Clues:

• "Come to think of it . . ."
• 'Whoa!'
• Conversation opener
• "Stop it!"
• 'You there!'
• Attention-getting call
• With 27-Across, get hitched
• Opine
• 'By the way...'
• "You, there!"
• "Howdy!"
• "Listen!"
• "___ Hey" Willie Mays
• Give voice to
• Perhaps