A condition which results in a person having no common sense and/or knowledge other than what is available to him or her on the internet.
Condtion which is self-inflicted by an e-tard.
Whisper to a friend: "That guy at the party was glued to his Blackberry... Is he e-tarded?"
Ann: Hm? My cellphone. What?
Sam: Jesus Ann, you're totally E tarded. Where's your cell?
Ann: Uh, what were we just talking about?
Person 2: Yea. I thizzed so hard! Man I was rollin balls. I'm "e-tarded" today.