Combination of retard and fucker. As such, fucktard infers a person who acts both incredibly stupid and incredibly assholish at the same time.
After the underage student openly admitted to having three alcoholic drinks to the school newspaper and to the police, the fucktard pleaded "Not Guilty" to charges of underage drinking.
Noun?? The mental state immediatly after really great sex. Charactoristic of acting silly, goofy, being clumsy or just generaly in a silly mood following awesome sex due to lots of endorphines running rampit throughout the brain. To be fucked stupid.
That sex was sooo great, afterwards he was acting fucktarded.
I fucked her so hard, afterwards she was fucktarded.
That goofy dance he does after we have sex is so fucktarded.