Sister's Tempting Mouthful

In a seedy motel room, a transgender sister and her brother find themselves alone, their parents off on a bender. They're both horny, both needing release. She looks at him, her eyes hungry, and he understands. She unzips her jeans, revealing her hard cock, and he kneels, his mouth watering. He takes her in, his lips stretching around her thick girth, his tongue swirling around her bulbous head. She groans, her hips bucking, fucking his face. He gags, but she doesn't stop, her lust taking over. She grabs his head, holding him in place, her cock pulsing in his mouth, her cum filling him up. He swallows, his own cock throbbing, needing release.

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