Erection

"ERECTION", which it is noticed after losing, was that it was a phenomenon that was more mentally meaningful than physical.

In someone's novel, there was a scene that pierces the shoji（Partition made of Japanese paper） with "erect penis", but I should have done it now when I think now.

It is told that the phenomenon of testosterone will reduce spiritual motivation, but exactly "When erections disappear, various motivations will go away"