Oh, come on. They're just harmless–*looks at artist*–oh.
It's gotta be water regardless, right? Why would they pelt each other with gonads when they find the stuff gross to begin with? Plus, there's not a lot of the stuff to make enough water balloons so it lasts, and if there is enough, we're talking piles of hospitalized men and a town going under from all of its men dying off or being made into eunuchs for life. They'll run out, so what's left of them to use at that point?
It's gotta be water regardless, right? Why would they pelt each other with gonads when they find the stuff gross to begin with? Plus, there's not a lot of the stuff to make enough water balloons so it lasts, and if there is enough, we're talking piles of hospitalized men and a town going under from all of its men dying off or being made into eunuchs for life. They'll run out, so what's left of them to use at that point?
Men can live without their testicles, people can supposedly not live without their shirikodama and kappas are pelting hundreds of these around as danmaku per fight. There is no shortage of supplies for either. It is only gross if you get hit! A greater incentive to learn to become quicker and get better at dodging. If you can dodge a wrench, you can dodge gonads.
Rule 1 of Space Jin: (to those who haven't seen enough or any of his pics) expect ball busting. Rule 2: don't expect him to change, no matter how much you complain about it.
Men can live without their testicles, people can supposedly not live without their shirikodama and kappas are pelting hundreds of these around as danmaku per fight. There is no shortage of supplies for either. It is only gross if you get hit! A greater incentive to learn to become quicker and get better at dodging. If you can dodge a wrench, you can dodge gonads.
So basically either one goes home in humiliation that they smell like a rotting nutsack, or no one gets hit. There's still not enough of the stuff though, so even if the men they assault can potentially live afterward, they're rendered incapable of breeding for the next generation.
Actually, come to think of it, zoom in very closely on Cirno's water balloons. They're just transparent enough that you can see the outlines. You can see her left palm and right arm. I don't see any testicles in them.