Related Clues:

• 'LMAO' alternative
• Snicker segment
• 'U R funny!'
• Response to an e-mail wisecrack
• Titter in a tweet
• Online outburst
• Texter's guffaw
• Twitter titter
• Chat-room ha-ha
• Bit of a laugh
• 'You're killing me,' in texts
• Part of many an AIM chat
• Laugh part
• Online cackle
• Emoticon alternative