A guy who is socially retarded and has no game when it comes to chatting with and picking up girls in bars, clubs, etc. However, online he has some sick game when it comes to the ladies as he is picking up girls on facebook, myspace, aol chatrooms, etc. Online he turns into a predator.
Josh is a Don Juan Dot Com.
Greg: Dude, you meet or talk to any ladies when you went out last night?
Josh: Nah man, I just freeze up or get too shy....but I met another chick from myspace last night. She's hot and she's coming over tomorrow night.
Greg: Dude, you are a Don Juan Dot Com!