Anatomyfags, help me out. He* seems to be flexing his rectus femoris in at least some parts of that video. Why is that making his fake penis contract, exactly? At first I thought maybe the gracilis is still connected at its original origin point, and they have just kind of pulled one end of the muscle free and fashioned it into a prehensile penis:
So it's still contracting with the other hip adductors? But
apparently they transfer the whole muscle at both ends. Maybe it's a different technique from the one in that paper? I am confused and deeply disturbed. Does the flexing happen when you're just walking around? You need hip adductors for your normal gait. Do you have to deal your penis doing a little jive in your pants constantly?