Papá's stern voice echoes in their minds, but the siblings can't resist the pull of their secret lust. Clad in skimpy underwear, they press against each other, their bodies slick with sweat. The brother's massive cock tents his boxers, and his sister, her pussy dripping with forbidden desire, can't help but grind against it. They worship each other's bodies, their hands exploring where they shouldn't, their moans muffled by the closet walls. As they reach the peak of their taboo pleasure, they collapse, their bodies shaking with the force of their release and the weight of their sin.