Yes its possible to jizz that much. I do it all the time when I fuck a lady because I masturbate off too much and dont get a lot of stimulation from the vagina. So when I very first manage to jizz (which takes forever and senses unlikely, and it actually makes me want to piss), I jizz like this. Even way more actually. But you have to go on fucking someone for at least an hour. This movie is faux however.