A super-fly extreamly hot female that has a nice tight little body. It's more than an implication that the girl is in fact "skinny" but thats she has attractive feautures across the board.
"Hey Phoenix, check out that girl over there. Oh SKINNAY!"
A code word used by leather clad urban homosexuals to announce their availability for glory hole action.
skinnay, Skinnay, SKINNAY!