Related Clues:

• 'That's funny!,' in an e-mail
• Cyberspace guffaw
• Bray syllable
• Online display of amusement
• Chat room ''That's a riot!''
• Cyberchuckle
• IM delight
• Preceder of “haw”
• Cyberspace ''Ha-ha!''
• With 103 Across, donkey remark
• Cybercackle
• Sardonic laugh
• Not quite ROTFLMAO
• Cyberroar
• Ha-ha, nowadays