An EFA Policy is almost a lifestyle or basically how an individual (usually a girl) is known. EFA is an acronym that stands for "Everything For Anything", which in case you haven't already figured out, means that the individual will do every kind of sexual act for any form of compensation. Usually an EFA Policy applies to the whorish girls in high school and college. They are usually avoided because they are notorious for being infected with phallus-crippling STDs.
Guy 1: Man, that girl is fine! Yo, you know her number?
Guy 2: Hey man, you gotta look out for that bitch. She runs on an EFA Policy.
Guy 1: For real? Sheeit.