The sister's rosary beads click against her skin as she rhythmically moves her hand between her legs, her breath hitching as she nears her climax. She's been fighting this urge, this need to defile her chastity, but it's too powerful to resist. She stands, her legs shaking, and turns to face the altar, her eyes locked on the crucifix. With a moan, she lets go, her warm piss cascading down, drenching the sacred space in her taboo fluids, her body wracked with pleasure as she commits this ultimate sin.