If you say that Japan is the nation that loves to be weird in sexual matters, I believe no one will object. The condom improvement competition held in Tokyo let men and women all over the world indulge in a bit of weirdness.
Two Birds with One Stone Cosmetics
Women always know how to extrapolate. In the hot and humid Nile, women would apply thick layers of colored grease with an eerie smell on their eyelids. It was said that this could kill a special tropical water bug called "Babamisu." Now, some tribes in the Amazon continue this tradition. What's impressive is that they not only apply it on their faces but also use it as body paint to decorate their private parts. Women also use this grease as a spermicide, carefully applying it before sex because it was rumored that this "colorful eye shadow paste" that kills water bugs is also effective against sperm.
Nightmare-inducing Condoms for Men
Of course, this kind of thing appears in France. This is a condom with graduations, looking like a small ruler with measurement units on it. After a man wears it, the length is precisely measured, leaving no room for exaggeration or false reporting. For a time, this thing was warmly welcomed by women, but some men loudly protested, feeling insulted, and said it would make men have nightmares and cause impotence. It shows that the size of men is indeed, like the weight of women, a number that no one wants to figure out.