A person, usually a female who's chronic promiscuity and generally cunt ish behavior and bitchy personality force you to give them a whole new form of insult
i. a slut who gets fucked a lot
ii. A term of endearment ii. a particularly slutty slut who deserves to be fucked even more just because s/he is a slut
"My darling, you're such a wonderful little fuckslut. I'd like to chain you to my bed and fuck youwhenever I want because you're my fuckslut."
A person with a special liking for semen consumption (especially in large quantities), and at the same time a special liking for submissive vaginal/anal intercourse. Note the following about the cumguzzling fuckslut: 1) he/she is not a fuckwhore; 2) he/she is most likely to be submissive but can also be dominant if fed enough cum; 3) he/she is not a "cumguzzling gutterslut," which may imply a sexual identity centered on practises other than anal/vaginal intercourse.