As nudist I got used in getting my body messy, but there are many situations that nudists would avoid to expose their naked body:

What about taking a bath in a muddy pit used by pigs to cool their bodies? Its smell of their piss and shit, the mud is slimy and full of dirt, stinking dirt.

You stand naked in front of it and you are told to step into it. What do you do?

I stepped into it, felt my feet and legs sink into the slime until my knees, my body got invaded by flies.

I was ordered to turn towards the camera and to kneel in the messy slime. I felt my upper legs sinks into the dirt, the water going between my legs, my genitals, my lower belly... I had to stand up again to show my messy body for the camera.

Again I had to sit down into the dirt, sinking my body until my chest, my hands and arms into the mud... Again I had to stand up and masturbate my muddy dick a while in front of the camera.

Then I had to lay my body into the messy mud, my chest, my shoulders ,... just my face remained at the surface to breath the horrible smell of my pigs bath. I had to crawl my body on the muddy borders, turn around on my belly on my back and smear the dirt all over.

I smelled like a pig. I used to play naked with the pigs, but after my pig bath, they treated me as one of them. I wear my stinky mud cover for several hours, before I got it to dry in the sun to wrap it from my skin. I lived naked and it took many washing attempts and days before the smell was gone. This was about the dirtiest experience I ever had.