Dgalan27's sister, dressed in enticing lingerie, can't resist the urge to touch herself. She slips a hand into her panties, finding her clit, and begins to rub, her body arching with each stroke. She moans softly, her other hand pinching her nipple through the lace. She catches her brother watching, a mix of shock and excitement in his eyes. She beckons him, letting him see her fingers glistening with her juices, inviting him to join her in her self-indulgent pleasure.