(request) Cleansing

I know requests aren’t super common here, but I love this idea that’s a fairly narrow fetish, and I’m not an especially gifted writer, so I figured I’d see if the fine folks here could come up with something…

My thought is this: it starts with a WAM BDSM scene. After that’s done, the domme decides he/she needs to clean up the sub, which he/she does by going to the local automatic carwash, tying the sub onto the car, and running them through the carwash until they’re clean, no matter what the sub thinks about the plan.
(sub resistance is cool!)

The more details about the inside of the carwash, the better! (and for those that don’t know, WAM is wet & messy, scenes involving messy stuff like paint, food, etc.)
The only other thing is, I don’t mind the genders involved, so long as the sub and domme are different genders.

Source: reddit.com/r/eroticliterature/comments/694b29/request_cleansing