Enjoy Your Wank

Alexa has asked you to come round to help her out with her revision, she knows you are the smartest guy in college! She asks you some questions about her work but realizes that you aren't paying attention to what she is saying, when she looks up she catches you looking down her blouse. She decides that while you are there helping her out she should give you something as a reward, Alexa instructs you to take your already hard dick out of your trousers and wank over her tits while she teases you and talks dirty.