"You mustn't move!" their father's voice echoes in their minds, yet innate lubrication soaks the brother's shaft as Michelle slowly sinks down, rubbing her tight, untouched virgin pussy along the hard length of his cock. The siblings fall into a heated rhythm, their bodies slapping together as they give in to their sinful lust. But as they reach their peak, they're struck by the reality of their actions, collapsing into a post-coital mix of pleasure and shame, their taboo desires temporarily sated.