Noun. Uncouth fat women who are and look promiscuous. An expression derived from a comic cartoon of the same name in the adult and blatantly sexist comic 'Viz'. The popularity of the comic rose to phenomenal heights, hence the use of the term. [1990s]
FAT-SLAGS
Meaning of FAT-SLAGS in English
Slang English vocab. Английский сленговый словарь. 2012