A Hybrid Crossbreeding brought about by the pollenation of a Fuckboy with a Retard. A Retarded FuckBoy; A person that is so Fucked Up that they are too stupid to even know it!
Man, that Retard is a real FuckBoy,... Hence,....a real FuckTard!
Someone who is a fuckwit and also a bit retarded with their thoughts.
Oh that fucktard Trevor decided it was a good idea to jump into a lion enclosure and thought it was a cool idea to take a couple of selfies.
A person who is acting "Fucking-Retarded", one who shows evidence of being stupid through several actions.
A person that tires to pull a retarded prank, but fucks it up.
Person 1: Dude I tried to prank my Mom but I fucked up
Person 2: You're such a fucktard
A Fucktard is someone that is excruciatingly annoying and/or unbelievably annoying