I meet with my step-son's teacher and he tells me that my step-son is failing his class. I realize just how serious the matter is. My step-son has been having bad behavior in school lately. I try and see if there's something I can do to keep him from failing. I make a desperate attempt to save my step-son's grade by pulling out my tits and offering to be a big titted slut for the teacher. I suck his cock and then ride him. He makes a huge mess all over my tits and face. He then says he's not going to do anything about my step-son's grade. The teacher used me and I did all that for nothing. There's nothing more I can do. I now feel angry and humiliated.