Possible Clues:

• 'Yeah, right ...'
• 'Uh-huh, yeah, sure'
• ''Oh, sure''
• "Yeah, as if!"
• 'Yeah, as if!'
• Dubious comment
• ''That'll be the day''
• 'Su-u-u-ure'
• 'That doesn't surprise me!'
• ''Yeah, sure''