You grab for the watch as she cums

"Oh shit! Fuck! Ahhh!"

Your stepsister's screams only barely reach your ears as you feel her dick spasm for the first time, pumping semen into your mouth. You pour all of the willpower you have left into ignoring the dick in your mouth. Sarah gives one last scream, and her body tenses, hips thrusting upwards, hands slamming downwards on the leather of the couch.

At that moment, your hands shoot up to her wrist, finding the spot on her arm where she wears the watch. When you grasp it, though, you notice that it doesn't feel like a watch, but like a thin band of metal, uniform all the way around. You don't have time to worry about it, though. You put all of your energy into yanking it down off her arm.