Related Clues:

• 'Ri-i-i-ight'
• "And I'm Abraham Lincoln!"
• "You must be joking!"
• Doubter's rejoinder
• Cynical rejoinder
• "___ You Look Good on the Dance Floor"
• 'Yeah, whatever'
• "I showed you!"
• Skeptic's outburst
• "Tell me another one!"
• 'No chance!'
• 'Uh-huh, whatever you say'
• Skeptic's phrase (2 words)
• 'Oh, that's likely!'
• Syllable of sarcasm