Related Clues:

• None-too-gentle landing
• Impact noise
• Sound of a flop
• Land heavily
• Heavy dull sound
• More than a plop
• Sound of a failure
• Sound after dropping off?
• Muted crash
• Bad joke's sound?
• Bad joke's sound
• Dull sound of impact
• Dull sound effect
• Dull impact
• Sound of an ungraceful landing