A chaste kiss turns into a heated make-out session as the siblings can't resist their pent-up lust any longer. The brother's strong hands grip his sister's ass, pulling her against his throbbing erection. She moans, grinding against him, her pussy aching for his cock. He lifts her up, and she wraps her legs around him, feeling his hard length rubbing against her wet panties. They stumble into the nearest room, their bodies entwined, tongues dancing, as they frantically strip each other naked. His thick cock springs free, and she takes it in her hand, stroking it eagerly before guiding it to her eager, waiting cunt. They fuck hard and fast, their bodies slapping together, their moans filling the room, until they both explode in a torrent of pent-up desire.