In this clip, John Marsh sinks into some very soft, warm, swamp muck wearing red, rubberized, bikini briefs. He sinks in deep, goes in head-first, plays with himself, gets inverted, and does a full immersion, feet first. He pretty much spends the entire time enjoying the treacherous muck and playing with his cock. Although the mud is bottomless and John does sink over his head, this is just an erotic adventure.