Related Clues:

• SLAM
• Clout
• Hairdo feature, perhaps
• Hand-to-hand contact
• Explosive sound
• Clean, as erasers
• Gunshot sound
• Fourth of July sound
• Unwanted engine sound
• Backfire sound
• React to an act
• Reward the performance
• Show approval, in a way
• Burst of thunder
• 'Wham!'