Possible Clues:

• 'Wow, that's 2 funny!'
• 'Hilarious!,' in a text
• “That’s hilarious,” in texts
• 'Hahahahahaha!'
• Response from a greatly amused texter
• 'u r hilarious!'
• “lol,” escalated
• 'omg too funny'
• "hahaha"
• "OMG that's hilarious"