Coming from someone who's part of this niche community, there's really not much to get. It's difficult to explain, but my guess is it likely has to do with them being considered "inflatables". At least with me, it does. I don't speak for everyone involved.

And no, I don't need explaining about how they actually work. A buddy of mine gets enough of that to be considered moot.

Interesting. Still can't say I get it, but that kind of thing is very personal to the person into it and all c:

Yeah.