Addictively wasting hours on Urban Dictionary when you have very important, urgent work to do, even though the mental hiatus could result in suspension, contract termination, social expulsion or in some cases death.
Ryan: "Check out this new word I found on Urban Dictionary last night"
Andrew: "No ways man. Last time I was caught Urbanastinating in my cubicle I was given a final warning"
Ryan: "Dude, thats why I always urbanastinate in the privacy of my own room"