A story in the Dark Tales Universe
This story is set in the periphery of the Naked in School Universe. At the start of every school year is the first day, "Orientation Day". When students are assigned to the classes that best suit their individual inclinations and interests. And after managing to pass the previous semester's mandatory class on "Sexual Awareness", Jeb thinks that the rest of the program will be smooth sailing.
I'm sure I mentioned about seeing her cut her brother's hair topless while I spied through the door jam, giving me the biggest boner I've ever had. I sometime lie awake at nights seeing them again in my mind and it would always have the same effect on me. Perhaps you think I'm a bit of a perv getting excited when I see my girlfriend get touched up by some one else, well you're probably right.