I wonder if part of the reasoning behind different fetishes being primarily liked by people who grew up in different places relates to the media being available growing up. There's been a few times on the f plus or extra credit where a post being read talks about some specific person's sexual awakening when it comes to a fetish. Maybe the reason this is primarily British is there is some media that contributed to this being a sexual thing for them, but not as much with other places. Or just there's other terms for basically this same shit, but sploshing just sounds very British.