I jump face-first into a pit of thick, black marsh muck, the wet gunk slurping around me as I hit the surface with a loud splat. I grab handfuls of the sludgy mess and smear it into my armpits and I slather it over my face as I stroke my cock. The weight of the stinky mire makes every stroke and tug that much more intense, resulting in an amazing muddy orgasm.