How true is this scientific video?
When I was a kid, I fapped to a medical encyclopedia we had at home.
Now I have a medical fetish so strong I can't get hard without imagining woman's internal organs, and not even sexual ones (heart, arteries, liver).
One of my first faps was to a medical illustration show the cross sectional view of an erect benis ins bagina.
It's funny how we're so wired to respond sexually to even the thought of such an encounter, in 2D on a sketch.
Are you me, anon?
I sometimes get erections from thinking about the digestive and urinary processes of female college students, as a biomed engineer.
Man, it's really intriguing, isn't it?