(adj.) One already having the values of a jackass but conjunctively afflicted with being a complete retard. It is worth noting that one who is asstarded usually has asshole attributes such as a bitch or a dick but failed at life by being I.Q. inept.
-so I went to billy yesterday and got a cookie from him and went to the movies and got popcorn and don't know how to use periods.
-damn girl, you're andtarded.