Related Clues:

• "I'm treating"
• 'Call ___' (1974 hit)
• Some laughs
• Words of generosity
• Crack reaction
• A comic reaction?
• 'Good one'
• Joke reaction
• Sounds of glee
• Laugh-track snippet
• Round-buyer's words
• Catchphrase for Nelson on 'The Simpsons'
• Facetious "Not funny"
• 'ROFLMAO!'
• LOL relative