"ArUn" is a word commonly used to define
people who refuse to learn proper grammar. They often have difficulties trying to properly communicate with other
people because of it. They often use "
xD" at the beginning and end of every sentence. Such users are quite common in the Comments section of sites like YouTube, Vimeo, Disqus etc.
Sarah: Whatevs
Bish xD am gonna go torrent that Free MMO now
xD
Jimmy: The English, You're killing it. You just went full ArUn.