If you know that “to fuck” a person is to have sex with him/her, you automatically understand that a fuckable person is one that you would like to fuck. Accordingly is an unfuckable person a person that you don't want to fuck at all. A refuckable person is a person you would like to fuck again, while an unrefuckable person is one that you don't want to fuck again. You know the meaning of all these words by virtue of your knowledge of the individual morphemes fuck, re-, -able and un- and the rules for their combination.

a spanish word meaning the flipflop
used by latin moms to beat their child's ass

Someone who has potential to be a person that someone wants to fuck.

Any man/woman who is so fine you would fuck 'em right then and there.

NOUN: A person that is attractive enough to fuck.

describes one who is worthy of fornication

when someone is not that attractive, but you are willing to submit yourself to having sex with them