Bulging for the Professor

I've never been that kind of girl, but when I discover the biology professor I've had a crush on all semester lives right next door to where I'm housesitting, the opportunity is too good to pass up. The right clothes, some makeup, and surely he won't recognize the quiet little mouse from the back of the class. No harm in that, right? The last thing I expect is for this dominant older man to recognize me, and decide my extracurricular activities require a hard and unprotected lesson in human reproduction. This 6000+ word short is an advanced lesson in human biology.