A combination of 'slut' and 'fantastic'. Describes a person displaying copious amounts of said trait; in this case the individual would be fantastically slutty. User-created words such as this are often casually thrown out at the discretion of the speaker (ex. Fergalicious).
A word used by people who listen to Ska. One of the greatest compliments you can give. Can also be used as an adjective meaning "amazingly kool in the ska world" See also: Skalicious