Related Clues:

• ___-hoo
• 'Hoo' preceder
• '___-hoo!'
• First half of an attention-getter
• Hoo preceder
• Half a chocolate drink
• "___-hoo!"
• '-- -hoo!'
• "__-hoo!"
• '-- -hoo!' (attention-getter)
• ''___-hoo!''
• '-- -hoo!' ('Hey, over here!')
• '-- -hoo!' ('Psst!' alternative)
• '-- -hoo!' ('Hey!')
• ''__-hoo!''