Related Clues:

• Crack reaction
• A comic reaction?
• 'Good one'
• Joke reaction
• Sounds of glee
• Laugh-track snippet
• Raucous laugh syllable
• Word of disdain
• Catchphrase for Nelson on 'The Simpsons'
• Facetious "Not funny"
• "Like that's gonna happen!"
• 'ROFLMAO!'
• "You wanna bet?"
• LOL relative
• Crack response