Related Clues:

• [Suddenly!]
• When repeated, a kid cowboy's shout
• Return for a buck?
• SLAM
• Hairdo feature, perhaps
• Explosive sound
• Gunshot sound
• Fourth of July sound
• Unwanted engine sound
• Backfire sound
• 'Wham!'
• Shut noisily
• Boom alternative
• Strike violently
• Sudden noise