Rachael has kept you behind after college to clean up a mess you made in the classroom, she isn't surprised that is't you causing trouble again so she wants you on your hands and knees cleaning up! What she doesn't realise though is that while you are on the floor you are getting a great view up her skirt of her small thong and you decide to take your dick out and start wanking, what will Miss C say when she turns around and sees what you are doing.