Referring Clues

• Response to a joke on-line
• E-mail guffaw
• Response to an on-line joke
• Chat room abbr.
• Chat room chuckle
• Chatroom chuckle
• "Ha-ha," online
• Online guffaw
• Equivalent of "ur 2 funny"
• Online "ha-ha"
• Modern joke response
• Cyber-chortle
• Modern indicator of amusement
• Joke response
• Chat room joke response
• Online chortle
• Response to a funny text
• "That's funny!," in an e-mail
• Response to a joke in an I.M.
• Tickled user's response
• Ha-ha, nowadays
• Text te-hee
• Online chuckle
• "OMG, that's sooo funny!"
• Response to an e-mailed joke, maybe
• Cyber-guffaw
• On-line chuckle
• Cyber-chuckle hidden in this puzzle's theme entries
• Chat room chuckle (abbr.)
• E-guffaw
• Cyberspace chuckle
• Chuckle in a chat room
• On-line guffaw
• Chatroom guffaw
• Cyberchuckle
• Cybersnicker
• E-chortle
• "That's a riot!", in chat rooms
• Cyberguffaw
• Twitter titter
• Texter's guffaw
• Reply to a funny IM, maybe
• Letters to an on-line jokester
• Cyberchortle
• Bit of Internet mirth
• Electronic gag reflex?
• On-line cachinnation
• Chat room chortle
• "That's funny," in e-speak
• Alternative to a smiley face emoticon
• Chuckle in an e-mail
• "Ha-ha," on-line
• IM guffaw
• What might be sent to a card on the computer?
• Response to an IM'ed joke
• IM "Ha-ha!"
• Internet chuckle
• Online "Ha!"
• I.M. snicker
• Texter's tehee
• E-mail cackle
• Chat room guffaw
• Funny-text reaction
• IM delight
• Cybercackle
• Cyberroar
• IM chuckle
• Cyberspace snicker
• Chat room "That's a riot!"
• Wisecrack response, in modern shorthand
• Bit of high-tech amusement
• Online "That's funny!"
• Online "Ha-ha!"
• "Ha ha," in a chat room
• Chat-room guffaw
• "Ha ha ha" on a PC
• Cyberspace guffaw
• Cyberspace "Ha-ha!"
• Chat-room chuckle
• Online display of amusement
• Chat room chuckle, for short
• "Ha ha!" on the Internet
• "That's hilarious!" in chat rooms
• "Ha ha!" in chat rooms
• IMer's chuckle
• Chatroom chortle
• Ha ha, online
• Online yuk
• "U R funny!"
• Response to an e-mail wisecrack
• Titter in a tweet
• Cyberspace "Ha-ha!"
• Chat-room ha-ha
• On-line chortle
• Texter's titter
• Part of many an AIM chat
• Online cackle
• Emoticon alternative
• Cyberchuckle, and a hint to this puzzle's four longest answers
• AOL guffaw
• IRC chuckle
• Tickled texter's comment
• Tickled texter's titter
• "That's too funny!" in netspeak
• Texter's "that's funny!"
• "Ha ha!" on the Internet
• Email guffaw
• Online joke response
• "UR 2 funny" equiv.
• "Ha ha," in a chat room
• "Ha ha ha" on a PC
• [What you just typed was very amusing]
• "That link was hilarious"
• "LMAO" alternative
• "You're killing me," in texts
• "Ha ha ha!" online
• Follower of a chat room joke
• "Ha-ha," in email
• Texter's tee-hee
• [I'm so funny!]
• "I'm giggling audibly," in email
• Hi-tech titter
• Texter's 'That's funny!'
• Chatroom chuckling
• 'That's funny,' to a texter
• 'Very funny!' in chat rooms
• Chat room chuckling
• 'That's funny!' to a texter
• Chatroom chortling
• Chat-room chortling
• Chat-room chortle
• Internet giggle
• E-chuckle
• E-mail chuckle
• Cyber-chuckle
• Keyed-in chuckle
• Online 'Ha ha'
• ROFL alternative
• Joke follower
• "OMG ur so funny!"
• Abbreviated yuk
• Hi-tech guffaw
• Texter's chuckle (opening 17-, 34-, and 55-Across)
• Texter's roar
• SMS interjection
• "IMHO, that's hilarious"
• "Very funny!," online
• IMer's "How funny!"
• "You're killing me," textually
• "U crack me up!"
• "OMG, too funny!"
• More than te-hee, online
• Online giggle
• IM giggle
• Doing much more than cqtm
• Quick "ha ha"
• E-mail giggle
• 2012 Miley Cyrus movie
• Response to a site gag?
• "That's hilarious!," in a tweet
• Twitter titter, and then some
• Texter's chuckle
• "Funny vid, thx"
• Texter's 'That's funny'
• Chatroom ha-ha
• Internet guffaw
• Net snicker
• Tweeter's "What a hoot!"
• Response to an online joke
• Typed chuckle
• Quick laugh?
• End of a texter's amusing comment, perhaps
• Bit of cybermirth
• Tickled texter's remark
• "U R 2 funny!"
• Internet acronym rarely meant literally
• 'Very funny!' online
• IM snicker
• [Ha!]
• "Hilarious," to texters
• [That cracks me up]
• Texting titter
• 'U R funny!'
• Digital chuckle
• Modern lead-in to cat
• Text giggle
• Alternative to :-)
• Online ha-ha
• "U R so funny" alternative
• Cyberyuk
• "OMG ur 2 funny"
• "Ha-ha," in email and texts
• Audibly amused, online
• [I crack myself up]
• Texter's "What a riot!"
• Palindromic bit of textspeak
• 'Very funny!' in a text
• IM 'ha ha'
• Response to an Internet meme, maybe
• "u r a riot!"
• [That is so funny]
• Online 'Ha!'
• Modern reaction to a riot?
• Texter's reaction to a joke
• Email chuckle
• 1-Across, in textspeak
• :-D alternative
• Written guffaw
• Common palindromic text
• Netizen's guffaw
• "Gr8 joke!"
• "Ur hilarious!"
• OED initialism since 2011
• Typed guffaw
• "U slay me!"
• "Haha, u r hilarious"
• "How hilarious!" in chat rooms
• Chuckle online
• "I'm cracking up," in a tweet
• Roaring online?
• Titter on Twitter
• "That's funny" online
• I.M. chuckle
• [You crack me up]
• Tweeter's titter
• Texter's "That's hilarious!"
• Cyber-giggle
• "Haha"
• It doesn't mean "lots of love"
• Facebook giggle
• Amused initialism
• "OMG, that's funny!"
• Response to a joke, maybe
• Chat room letters
• Chat room letters signifying laughter
• Chat room laughter letters
• "That's hilarious!" in cyberspeak
• Chatroom laugh letters
• "That's funny, screenname123!"
• ROFLMAO, but milder
• Abbr. near a smiley
• "That's funny!"
• "That's funny, lazerpwned1983!"
• Not quite ROTFLMAO
• "That's funny!" on the message boards
• Internet snicker
• "Ha!," in chat
• "U just got pwned"
• [Your comment amuses me]
• "I get the joke and it's funny but I have no time to write all this"
• Internet ha-ha
• Fifty-fifty to catch Frisbee when laughing out loud
• "Very funny," briefly
• Texting "ha-ha!"
• Text message chuckle
• "I'm chuckling audibly," in email
• Response to a funny GIF, perhaps
• "ur so funny!"
• Texted titter
• "Ha!," in texts
• Reaction to a meme, maybe
• Texting guffaw
• "OMG ur a riot!"
• "How humorous," in an online chat
• Facebook chuckle
• "Ha ha ha!," in a text
• "That text was very funny!"
• "Hilarious," online
• Hilarious text letters?
• Texter's "Ha ha!"
• Online response to a joke
• :-D
• "omg i'm dying!"
• [U r hilarious]
• Response to a good meme, maybe
• [That was a funny one]
• Bit of texting mirth
• Brief chuckle
• Text suggesting delight
• "OMG, 2 funny!"
• "That's so funny," in a text
• "That was hilarious!"
• Letters sometimes followed by :D
• "OMG, that's hilarious!"
• "OMG haha!"
• Facebook titter
• Alternative to "U R funny!"
• Facebooker's "Funny!"
• Texter's "Very funny!"
• Twitter guffaw
• Letters of gr8 amusement
• Palindromic text
• WhatsApp chuckle
• Web prefix with cat
• "UR 2 funny!"
• Chat “ha!”
• Cyber-chuckle and this puzzle's theme
• "Ha-ha," in a tweet
• Not quite ROFL
• Online response to humor
• Howl that's seen but not heard
• Not just a "heh"
• Text message "Very funny!"
• GIF-sharing response
• "That's funny!," in a text
• “OMG, 2 funny!”
• Abbr. that debuted in OED in 2011
• Text chuckle
• "OMG, funny!"
• Esport with the map Summoner's Rift, for short
• BuzzFeed reaction button
• "Totes hilarious!"
• Typed "Ha ha!"
• Twitter chuckle
• "good one"
• Texting chuckle
• "Funny tweet!"
• Response to a funny meme
• “u r 2 funny!”
• Social media chuckle
• Texter's chortle
• Shorter "That's funny!"
• Text of approval
• "You crack me up," in a text
• "That's so funny!"
• IM chortle
• Enthusiastic online "Ha-ha!"
• Online outburst
• Crack up, in textspeak
• "ur a riot!"
• Bit of online mirth
• "Ha-ha!"
• Modern lead-in to speak
• "good 1!"
• "u r so funny!"
• "So funny!"
• "2 funny!"
• "u got jokes!"
• Quick "That's funny!"
• "Kidding!" letters
• "thats rly funny"
• Response to a forwarded meme
• Equivalent of some crying emojis
• "ur funny!"
• "omg so funny"
• Response to a funny gif
• "___ ur too funny"
• "That's hilarious! /gen"
• Cybergiggle
• Equivalent of the Face With Tears of Joy emoji
• Response to a texted joke
• :-) alternative
• Text back and forth?
• Amused reaction
• Has online?
• "Haha" alternative
• Less strong version of "lmao"
• "hehe"
• "hahaha thats hilar"
• Letters of amusement
• "OMG, that cracks me up!"
• Group chat chuckle
• Silly string?
• Response to a funny text, and a hint to this puzzle's five longest answers
• Text that's often an exaggeration
• [Cracking up]
• "haha! ur a riot!"
• Reaction to a funny GIF
• "That's hilarious!," in a text
• Response to a meme, maybe
• "Ha, good one," in a text
• "ur soooo funny!"
• "Hilarious!," in a text
• Snapchat snicker
• Text guffaw
• [I'm cracking up as I type this!]
• "hahahaha"
• IJBOL equivalent
• "omg ur funny!"
• "heh," but stronger
• "hahaha"
• "OMG, hilarious!"
• "What a hoot!," in brief
• "u should be a comedian!"
• "ha, good meme"
• "omg, u r too much"
• Guffaw, in internet lingo
• "Made me giggle!"
• Online "haha"
• Reply to a meme, perhaps
• [That was a good one]
• Chuckle in a DM
• "What a riot!," in brief