I have listed GS allowed on my body for as long as I remember and have accepted it in both showers/bathtubs and on puppy pads. But, the most surprising was when I was made into a piss burrito.

Basically, the Domme had done a mummy wrap with plastic wrap for much of the session. I was deep in subspace as she cut open
different points of the plastic to get to and torture parts of my body (nipples, genitals) then she extended the openings and climbed on the bed. I was blindfolded so couldn't see what was happening but then suddenly felt warm liquid hitting my chest and my genitals. From her taunting and the smell, I could tell what it was but I couldn't move away or stop it (even if I wanted to... Which I didn't). It was amazing and she left me to marinate in it for the rest of the session (probably 30 minutes but I have no idea.

Another time, I was supporting these two Dommes who were touring through Detroit. I scheduled back-to-back sessions (I don't really enjoy doubles as much as singles) but both actually chose to stay in the bi-level suite we were staying in during the sessions (although mostly in another part of the suite). Near the end of9je of the sessions, one of the Dommes gets an idea and puts down puppy pads on the floor then the two of them position me without telling me what is going on (I was bound, although standing, and had a blindfold on my face). The first Domme runs upstairs because she wants to piss on my head from the 2nd floor railing and before I can understand what is happening I am getting pelted with a steady stream of piss rain on my head that is harder than any rain I've ever been in. Meanwhile, I can hear/feel the other Domme running around me placing more puppy pads on the carpet where the 1st Domme's stream wasn't so accurate (yes, we cleaned it before checking out). That was totally unplanned and unexpected (But, acceptable because it didn't go into my mouth).