Related Clues:

• Tap-on-the-shoulder alternative
• It ain't exactly "Hey!"
• Sound from a test cheater, say
• Confidential warning
• 'Don't tell anyone, but...'
• Hushed ''Hey!''
• "Whatcha been doin'?"
• Attention-getting word
• Classroom nudge
• Sibilant call
• Subtle signal
• Verbal elbow?
• 'How ya doin'?'
• Subtle "Over here!"
• The Say ___ Kid (Willie Mays)