I Let My Stepson Use Me To Help Him Focus

My stepmom is so supportive. She knows I've been having a hard time at school and has been helping me study. We realized that I focus better when I'm using her as a sex toy at the same time, so now while I'm memorizing my texts, I'm showering her massive tits or her perky ass with my cum. When the only thing covering her hard nipples are the notes for my exam, there's no way I'm going to forget what they say. If I pass this test, I'm planning on claiming my reward, making her suck my fat cock dry and pounding her tight pussy until her entire face gets covered with cum.