Guy 1: That guy is Wiitarded.
Guy 2: Why?
Guy 1: He broke my VCR/TV combo because he didn't wear his Wiimote strap and broke my TV.
Guy 2: Oh, he sounds Wiitarded. He didn't even wear the strap, that is there to protect you and your TV.
A label used to define an individual that is incapable of playing a Nintendo Wii with any amount of skill. Their coordination and kinetic abilities are so insufficient that they are laughed out of any Wii playing session.