Been around this world a couple times now, Jacob, and you are absolutely right.

Such as:
"Suspicious wives in Japan are stopping their men from cheating on them--with the help of magical holy phalluses. Worried women head to the Yumizori Shrine in Kumamoto, a fertility temple with a two-metre long phallus as a centrepiece. Each buys a scaled-down version of it, and inscribes thereon her husband's name. The women then hammer nails into the phalluses--one for each year of their age. The result: The gods will ensure that the named husbands will be physically unable to commit adultery."
Far Eastern Economic Review

Weird,
Dan