No arousal, no physical stimulation, no buildup, no control: just an instantaneous shift from status quo to woaaah. Although a few patients have reported enjoying their seizures, many felt that the lack of control over where or when they orgasmed was unpleasant, embarrassing or frightening, which was probably why they sought treatment and wound up as medical case studies. Many of the cases have a remarkable point of similarity: these patients felt orgasmic but showed no outward signs of physical arousal.
If you're not aware of exactly what goes on inside your body while you have an orgasm , well, I don't blame you — isn't that why we have orgasms? To momentarily ignore ourselves, reality and the inevitable heat death of the universe, and just lean in to some pants partying? But just because we're not necessarily paying attention to our bodies while we orgasm, doesn't mean than our bodies are not doing a ton of totally impressive things when they launch us over the border into PleasureTown.