Related Clues:

• Pun reaction
• Ditch with a retaining wall used to divide land
• Routine reaction?
• 'That'll show him!'
• ''That's what you think!''
• Comedy-club sound
• "Gotcha!"
• Syllable of laughter
• ''Very funny!''
• "Yeah, sure!"
• "The joke's on you"
• 'Likely story!'
• Expression of triumph
• "Very funny"
• Punchline response