Related Clues:

• 'Doubtful'
• 'Don't be shy!'
• "Like that'll ever happen!"
• "Dream on!"
• "Let's do it!"
• "You're dreaming!"
• Valley girl's "Pshaw!"
• 'Yeah right!'
• Exasperated cry
• "__, be a pal!"
• ''Hurry up!''
• "Shake a leg!"
• ''__ you didn't know!''
• Skeptical retort
• 'Seriously?'