Maybe you're right and maybe the orgasm isn't that real at all. although I must say a few girls can cum through penetration. I've watched this vid again and have my doubts too at the moment. But for now I'm gonna leave it here for some people to enjoy. Unfortunately the title can't be changed
I never said I ALWAYS know. But I have seen 1000 scenes with a real (and visible) orgasm (my specialty or fetish), and in not one of them has the orgasm resulted from pumping a glass dildo in and out.