Related Clues:

• 'My Fair Lady' song
• 'Prove it!'
• Missourian's demand
• ''I'll believe it when I see it''
• Words in Missouri's state motto
• Missouri motto
• "Care to demonstrate?"
• ''Prove it!''
• ''Care to demonstrate?''
• 'You'll have to demonstrate'
• Skeptic's demand
• Missourian's phrase
• "Prove it!"
• Missourian motto
• "Where?"