a fucking ugly tard-or retard, who is categorically stupid, deserving of the adverb fucking, and quite unattractive. Similar to fucktard, but not really.
That bitch-a slaggy cunt who slept with a man knowing fullwell he had an std, is a fugtard.
a person so clueless that they appear to have been separated from society for an extremely prolonged period of time - as if that person had been asleep for 50+ years.