You are back from uni and your step-mom is asking you all about your first term. She is asking if you have a girlfriend, and if there are many girls who are as fully developed as she is! She has known for years you have a crush on her and is actually very flattered. Your step-mum deliberately wears low cut tops to tease you, and is flattered by how horny you get around her. One thing leads to another and she gives you a tit-wank till you spunk your load