A non sequitur interjection meant to imply ADD (attention deficit disorder). So called because it seems the stereotypical thing a young girl might scream when having her attention distracted by ponies. Common in many online forums.
Possibly the most irritating piece of chatroom vernacular in existence. Often used by teenage girls in chatroom who, for some reason, punctuate their sentences with "Like", "Totally", "soooooooo" and "Lolz."
Correct Response - "Speak proper, or STFU, N00B!"
"OMG WTF! u nevaz did dat, like, dats like, fkin gay! if i did dat id be like, wowz!!!!" - Actual AOL chat quote.