There probably are a whole lot more than anyone knows about because they don't do videos for everyone to see. Mt wife cried out like that a few times over sixty years and I would try to oblige her with extra semen.
I'm not sure how many ropes of semen he dropped in her mouth but she really liked being fucked good and hard. When she was sitting on his cock she had it buried as far inside her cunt as she possibly could get it. Love women who enjoy fucking like that.
http://xhamster.com/posts/321289