Related Clues:

• Deflation sound
• Sound of a flop
• Dismissive sound
• "As if!"
• Deflating sound
• Sputtering sound
• Deflation indication
• Dying-out sound
• 'Just like that' noise
• 'Oh, right, sure, yeah!'
• 'My ass!'
• Up-in-smoke sound
• Indication of a dud
• Disappearing sound, and a hint to this puzzle's theme
• Dud's sound