Related Clues:

• LOL, out loud
• 'LOL!'
• Must, with 'to'
• "The joke's on you!"
• 'Elvis -- left the building'
• 'Look at the loser!'
• Is stricken with
• "Little Bo-Peep ___ lost ..."
• 'Loser!'
• Some laughs
• Crack reaction
• A comic reaction?
• 'Good one'
• Joke reaction
• Sounds of glee