Related Clues:

• Infant's cry
• 'Yoo-__!'
• ''You stink!''
• 'Yoo-___!'
• Comic strip cry
• Ghostly greeting
• See 21-Down
• Nursery noise
• It'll give you a start
• Word from 22-Down?
• Derisive cry
• Nursery cry
• Shock giver
• Scary sound
• Audience put-down