Related Clues:

• Shout of discovery
• Tee-hee relative
• 'Harrumph!'
• "That's funny!"
• Guffaw components
• 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!"
• ''Very funny!''
• "Yeah, sure!"
• "The joke's on you"