Most guys can not get their cock to get real stiff when she screws his ass with her strap on unless she or he jerks his cock off at the same time. I think it is because you are in the submissive bitch mode you crave to be her bitch.
The best thing about the video was the early 80s music. Other than that, oh my what a lazy fuck. Can I get a refund of my 2minutes and 7 seconds? Lame video.