A sibling's masturbation session turns into a shared fantasy. The girl, lying on her back, legs spread, teases her brother with her wet pussy, fingers sliding in and out, while he jerks off, his cock throbbing with need. They lock eyes, their rhythm synchronizing, bodies arching. With a final moan, they cum together, her pussy contracting, his cock pulsing out a thick, creamy load, painting her stomach and thighs in their shared lust.