duzyamuthano: the gay porn director who has made a trademark out of the hands-free ejaculation is kristen bjorn. his videos are über-fantasy, in that they represent impossibly beautiful men in impossibly exotic surroundings enjoying impossibly spontaneous, charged, lengthy sex. so the men cumming without touching themselves is, i guess, intended as a demonstration of how strong the sexual energy is: pleasure just happens without being manually coaxed out.
two comments here: one is that, as a viewer, this seems to produce less than wonderful orgasms, which is hardly surprising since the guys' main method of control is absent; two, i've tried a couple of times to emulate them to see a) if i could do it and b) what it felt like - i brought myself to the brink with my hands, then left the orgasm to happen on its own. i have to say i hated it: not only did i feel i lacked 'manipulation' (for want of a better word) right when i needed it most, but it also hurt like hell! i guess my plumbing was washing back right at the point when it was trying to flush out or something.
whatever, i now stick to the tried-and-trusted ... and feel sorry for the performers in kb videos!