Related Clues:

• [Smack!]
• Emeril catchphrase
• Pop's relative?
• Resounding blow
• Block Greek leader causing crash
• "And there you have it!"
• "Wake Me Up Before You Go-Go" band
• Mah-jongg suit
• "... like THAT!"
• '80s pop duo with an exclamation point in its name
• Sound suggested by the first letters of the words in 17-, 26-, 44- and 58-Across
• Collision by-product
• 'Jackass' crew member Margera
• "Jackass" crew member Margera
• Backfire noise