Summary: Anna has been getting ass-fucked by her big sister's boyfriend, Paul, for the last few days. She'd teased him when Sara brought him home for the holidays and now he was finally pounding away at her tight ass. Meanwhile, Supermodel Sara continues to get no less than two cocks in her ass at a time, thanks to Paul's devious plans. He even has a new move he wants Anna to try and makes a proposition she can't refuse. We continue our adventures in a world where science has discovered that men fucking women in the ass makes men and women better students. Colleges and universities everywhere have instituted Surprise Anal Sex Week, and other special event weeks, to relieve tension and increase success.