To suddenly and inexplicably utilize an aspect of Asian online or pop culture in some area of the Internet or Undernet. Emoticons and Japanese terms/slang are without reason inserted into an online conversation, sometimes ruining the mood of the conversation.
John: "So I was talking to Mary today and I kept on stuttering"
Jimmy: "Awwww, that is soooo KAWAII"
John: "signed off at 8:50:32 PM"
To walk quietly behind a person until he/she notices you. Time spent Asian-ing can last from 5 seconds to 5 hours.
Guy 1: Dude, he totally Asian'd you for, like, an hour!
Guy 2: D: