Related Clues:

• "That's not happening!"
• 'Doubtful'
• "Sure, whatever!"
• ''My eye!''
• 'Mmm hmm'
• "Like that'll ever happen!"
• "Dream on!"
• Doubting riposte
• Sarcastic exclamation
• "You're dreaming!"
• Valley girl's "Pshaw!"
• 'Yeah right!'
• Cynical response
• ''__ you didn't know!''
• Skeptical retort