Bored and horny, this brother and sister find themselves alone in their parents' bedroom. The brother starts masturbating, his cock growing hard in his hand. His sister watches, licking her lips. She can't help but touch herself, her fingers rubbing her clit through her pants. He notices, his cock throbbing. She asks if he wants to fuck, and he can't believe his ears. She strips naked, showing off her curvy body. He grabs her, pushing her onto the bed. He spreads her legs, his tongue diving into her wet pussy. She moans, pulling him up to kiss her, then she guides his cock to her entrance, begging him to fuck her hard.