Stepmom's absence leads to steamy encounter with 18-year-old stepsister

When my parents left town, my 18-year-old stepsister and I found ourselves alone. As I was about to leave, she revealed her perfect body and seduced me with her big nipples and dripping wet pussy. After a steamy blowjob, we indulged in intense cowgirl action, showcasing our amateur skills and natural assets.