Beneath the canvas, the camper's secret unfolds. His hand, a blur of motion, pumps his throbbing cock, the sound of wet flesh against flesh filling the small space. He arches into his touch, his body tense with the effort to stay quiet, his mind a whirlwind of illicit fantasies. With a final, desperate stroke, he spills his load, the warm cum coating his fingers, a testament to his forbidden pleasure.