Related Clues:

• "Oh, suuure"
• "Not likely!"
• 'Horsefeathers!'
• Doubter's reply
• 'The hell you say!'
• Skeptic's challenge
• Skeptical reply
• Response of disbelief
• Disbeliever's comment
• ''Yeah, I bet!''
• 'Mmm hmm ...'
• 'Su-u-ure'
• "Fat chance"
• 'Oh, bushwa!'
• 'Doubtful'