Related Clues:

• Audibly amused, online
• [I crack myself up]
• Texter's "What a riot!"
• Fifty-fifty to catch Frisbee when laughing out loud
• 'Very funny!' in modern shorthand
• 'That's hilarious!' in cyberspeak
• 'Very funny!' in a text
• Palindromic bit of textspeak
• Reaction to an autocorrect fail, perhaps
• "u r 2 funny!"
• IM 'ha ha'
• Response to an Internet meme, maybe
• "u r a riot!"
• [That is so funny]
• Cybersnicker