I get caught pleasuring myself on my stepsister's phone

A tantalizing taboo encounter unfolds as I\'m caught indulging in self-pleasure, thumbing through my stepsister\'s cellphone. My sister, a stunning Latina with a voluptuous rear, confronts me, her eyes narrowing with a mix of surprise and anger. The tension escalates as she joins me, revealing her ample assets and inviting an exploration of our mutual desires.