The word "fucktard" means the same thing as using "retard" in a derogatory (as opposed to merely descriptive) manner. But whereas "retard" has the connotation of an insult to people with an unfortunate medical condition, the word "fucktard" makes it clear that it's a lifestyle choice.
Even though the parking lot was packed, some fucktard had parked his new car across two parking spaces.
noun. A person who is capible of using his/her brain but refuses to out of arrogance. This word comprises of the two words that make up its meaning: "Fucking Retard".