Pantyrub's stepsister innocently asks for help fixing her wifi, oblivious to the enticing sight of her in those tight, little panties. As I lean over her, my cock stiffens, brushing against her. She's oblivious, but I can't help but notice the damp spot on her panties, hinting at her excitement. My hands tremble as I fix her internet, trying to hide my bulge. She thanks me, unaware of the naughty thoughts racing through my mind.