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.
The absolute bottom of the hustler totem pole.The pettiest,shadiest,most scandalous and least respected motherfuckeron the block who has no skills and must desperately scramble to be in the right place at the right time just to get to dig the change and lint out of a motherfuckers pockets.Usually a lush or a crackhead past his prime.Not above sucking dick for nickel hits or digging the alluminum cans outta dumpsters for recycling change.