Ethan's eyes widen as Carolina climbs onto his lap, her skirt riding up to expose her panties. In a heated POV, she grinds her pussy against his cock, her panties shifting to the side. Ethan's hands grope her tits through her top, their taboo lust consuming them. They're oblivious to the clinic's noises, lost in their step-sibling fuck fest, until a distant voice snaps them back to reality.