Iím not positive, but Iím pretty sure that a naked dangling penis brushed lightly against me Tuesday night. This has never happened to me before, at least not at a Museum of Modern Art opening. Two nude figures, a man and a woman, face inward on either side of the narrow main entrance to the museumís newest exhibit, and unless you choose one of the other entries to the show (provided for the underage, uninterested, or queasy), youíre electing to run the gamut of flesh. So I did. Just as I was thinking "Whew! Made it!" I felt something sort of slide and bounce a bit against my thigh.