Related Clues:

• Christmas sound
• 'That's rich'
• Sardonic response
• Seasonal greeting
• Yo followers
• 'Aren't we the comedian?!'
• Laughing syllables
• Response to sarcasm, perhaps
• 'Stop! You're killing me!'
• Alternative to a Twinkie
• 'What a comic!'
• Popular cream-filled cake
• Tee-hee relative
• Hostess treat
• "That's funny!"