I've got a question about vocab

I've encountered "yoni" thanks to a wannabe hippie ex-boyfriend. But I would never use it in a love/ intimate scene, unless I was writing tantric stuff. And even then, I'd probably have a beta reader tell me if it works or if it's a throw-the-Kindle-at-the-wall moment.

I think one of the worst euphemisms I ever encountered was "manroot." How's that for cringey?

In point of fact, all euphemisms are only as good as their establishment. The standard set only work because we are all already familiar with them and rooted in their use. We could just as easily swap out wand and willow, but that would require that we have established the words in context of the story. For short stories there isn't enough room to learn new language. For sex scenes, rather than long form erotica, you need to be able to establish meaning across the body of work. That's why most of us just stick to the tools we were given.