Related Clues:

• 'My ass!'
• Up-in-smoke sound
• [I'm so clever]
• Bar shot
• Bullpen sound
• 'Yeah, I bet you do...' laugh
• 'Beavis and Butt-head' laugh
• Indication of a dud
• Half a devious laugh
• Bull pen sound
• Part of a self-satisfied laugh
• Sound that might accompany 37-Down
• Check for smells
• Chuckle bit
• Sound from 65-Across