"Tickling mud"

You decide to try the "Tickling mud", although you can't really fathom why it's called like that, but apparently it must be a mud bath and that is obviously good for your skin.

You are led into a room with a bathtub. After you have undressed, you lie down and notice that the bottom of the tub is not even, raising your torso, your head, but also your hip a bit. You get a blindfold on your eyes to protect you from the mud. A young women starts filling the tub with a dark, muddy substance, and due to the unusual shape of the tub, you are soon engulfed by the mud, while only your front face, your breasts and your belly are sticking out. It feels nice and it smells soothing and fragrant. You have been told not to move for a few minutes, and it was good they told you before, as your ears are now also covered in mud and it's not so easy to understand what's being said anymore.

After a few minutes, you feel an itch on your nose, and although being told not to move, you raise your arm and... don't raise it, because it's stuck. The mud has hardened within that short time, and you feel completely encased by something unyielding and solid.

"Ahem... sorry? Help!" you say, and your voice sounds loud inside your head, but the blindfold prevents you from seeing anything. You're not even sure if someone has answered. "HELP!" you repeat.

Then, all of a sudden, you feel something tickling your left nipple. You squeal and want to protect yourself from this unwanted feeling, but you can't move. A feather or something similar continues to tickle the nipple, then a second one joins for the other one. You start giggling, unwillingly, but helpless, at the complete mercy to the touch. You nipples both harden, and you start laughing, while simultaneously feeling a bit aroused against your will.

Then you feel a tickle on your nether lips. Wait... was your abdomen covered by mud or not? You don't remember, but apparently, your pussy is exposed to the outside world. What the hell is going on here? You try to struggle and wiggle, but the mud around you is rock solid. You are encased and utterly immobile.

"Stop that! Hahah! STOP! Help!" you shout, but there's no reaction at all. The tickling intensifies and sends you into hysterical laughter, which soon turns to moaning as the feathers are replaced by buzzing vibrations. No, no, no... you think. No! You are now heavily stimulated, on your nipples and on your clit by strong vibrations, and you can neither move nor see.

"STOP!" you moan one last time, then you succumb to the onslaught of pleasure. Your resistance turns into arousal, your struggles turn into shivers, you hear yourself moaning loudly, whimpering, screaming, and then you, after a while, you cum. Intensely.

You must have fallen asleep afterwards, because you wake suddenly to someone calling your name and touching your shoulder. The mud has drained down the sink, you are still covered in brown muddy substance, but it's wet and slick, just as mud is supposed to be. The blindfold gets removed. "Did you enjoy your treatment?" a smiling assistant asks.

You suddenly feel uneasy. Maybe it was a dream? You can't complain now against something that was a dream, right? Better not mentioning anything. "Very pleasent!" you reply, smiling. And indeed, it was. You shiver a bit, thinking that, as strange as it was, you actually enjoyed it.