Someone so retarded that calling them a retard would actually be a compliment. Someone so retarded that you feel like you are talking to someone's pet.
Tomany spells wrist r-i-s-t, he is such an aretard.
An inncorect way to spell /r/-tard which is a reference to certain people on the 4-chan boards. Referenced in South Park and correctly spelled if you had captions on.