Cumming in stepmom's panties turns her on

His stepmom is in the shower and he slowly opens the door to watch her showering naked. He could just make out her nipples through the privacy glass on the shower doors. Her panties were there where she had left them after she removed them from her warm soft skin. and vagina....moist pussy. He stole them then and quickly took them to masturbate with in his bedroom. he was quick to cum. Her body had gotten him rock hard and needing to let his seed flow. Right into her lovely panties. Oh that was awesome, he thought. until his stepmother came in looking for her panties......