The law pretends that men are in full control of their sexual urges and whenever they are hit by female pheromones they can tell their lanjiaos not to erect, flaccdians excepted.
The law must start recognizing that it's women who control the reaction of men's lanjiaos. A man cannot prevent his lanjiao from getting hard when he is aroused by the sight of a young sexy woman. That is not to say that because he cannot control his lanjiao he can do as his lanjiao pleases. The point is responsibility is shared between both sexes, and it's grossly unfair to place the responsibility solely on the man when he is the one who has no control over his erection, while the woman can decide what to wear and how much to reveal.