While I agree with the whole 'can't have an orgasm against your will' thing, as soon as you start directly stimulating brains with electrodes you do rather bend the rules. You can make parts of their body move, stimulate complex motor or behaviour patterns, cause them to re-live memories, experience sensations, emotions...etc.. I personally had not heard about the orgasm one until posted here, but it entirely stands to reason that, theoretically, it could be stimulated against someones will ( albeit at ridiculously impractical length! )