Frig is a term used by people under the age of 9, since it is illegal to say frick until you become 10 years of age. So frig is simply a replacement word.
Wow Billy, you stole my chocolate milk? Frig you!
Human-feline sexual act which involves inserting ones index finger into the vagina of a cat.
oh my god did u just frig my cat? You Cat Frigger
An environment, object, or person that is completely fucked up