Every evening I spied on how my stepsister undressed in the bathroom. I stood and jerked my dick through my jeans while she undressed and didn’t see me. But this time she saw me jerking off while looking at her naked body. I was scared, but she knelt in front of me, took my hard penis out of her jeans and took it into her mouth. I held her hair and fucked her mouth. After a juicy blowjob, she stood up doggy style and told me to fuck her tight pussy hard. I fucked her doggy style and spanked her big ass. When she had an orgasm, I took out my hard dick and shot a huge load of sperm on her big ass and rubbed it with my dick on her ass