Possible Clues:

• "My vote is to skip it"
• 'Thumbs down!'
• Response to "Must we stand for this?"
• “In my opinion, we shouldn’t”
• 'Don't think so'
• "Thumbs-down from me!"
• "Thumbs down!"
• Declaration when putting one's foot down
• Objector's phrase
• "Thumbs down from me"