I'm a fan of "classic bukkake." Supposedly, and who knows how accurate this is, in the original form of bukkake created in Japan, the one woman in the room would have a prominent place on a stage and the multitudes of men would be seated or kneeling below her, jacking off to her as she slowly removed her garments and then masturbated in front of them. None of the men were ever allowed contact with the woman and they all would cum on themselves.