CAUTION: this one contains incest, non consensual, and voyeuristic themes.
The specific plot I have in mind is a literate-yet-raunchy story. If you are interested in playing multiple roles, I would like for it to start of with my character (a young, sexy nymphomaniac) going down on her own domineering father while he's at work. He just so happens to be her school principle. He needs to be strict and possessive, taking her in risky places at school and whenever she gets rebellious. He covets her and at the same time wants nothing more than to jack off all over her. Then, after he and the football coach make a deal, she would move on to satiating one or more of the horny team in the locker room, doing whatever they wanted to get them off.
If you are only wanting to play one character, then the principle would be the preferred role. You don't have to be sadistic or anything if you're a gentler soul, but a dominant partner is a must.