Retardasaur
A person who is just a real retard. A Jonathan Canter, if you will. If you're around someone and no one really likes them, but everyone knows of them, or if someone is just being really dumb and/or awkward.
Jonathan Canter: Guys why am I so fat and a retardasaur?
Austin: Probably because you skip school, and eat too much.
Jonathan Canter: Nah, that can't be it
Austin: Probably because you skip school, and eat too much.
Jonathan Canter: Nah, that can't be it