There is a wonderful late-career film by the enjoyably lunatic Spanish director Luis Bunuel. In it, he makes a nice point about shame and privacy. In the film, a party of people gather to enjoy, well, sort of "dinner". They share a table with toilet seats around it, engage in lively conversation and act up like any dinner quest enjoying being in company and at the table. But the shared common activity is shitting. Shared shitting.
Every once in a while the people excuse themselves with mild embarrasment, and dash privately to a small, "hidden away" room, lock the door, and in that secrecy, they are served a meal through a whole in the wall.
- - -
The pre-position of your question, about cleaning a willy so that someone might see it happening, points towards shame. Foreskin or not, if you are in an open shower situation and you clean YOURSELF, why would you omit cleaning your willy (or the foreskin attached). Your willy or the foreskin is not most likely THAT unique or spectacular that washing it while you wash all else, would stop the world spinning, or cause a heart attach in the next fellow willy-washer. It's the underlying SHAME factor of your question that is worrisome. - To go back to dear old Bunuel, if it was washing your EARS in public, or getting a HAIRCUT in public, I'd understand...
Cheers :wink: FinnMan (from the land of sauna, where men happily wash their willies in the company of men, and sometimes even with their wife & mother present, too)