My Stepmom Proved My Girlfriend Doesn't Suck Right

After having caught my girlfriend all awkwardly kneeling on the floor putting her mouth on my dick without being able to give me real pleasure, my stepmother who is a tremendous spectacle of a woman came to me wanting to prove to me that she is the one who masters the art of blowjob and that in fact my girlfriend is just an amateur, But she ended up getting excited when she sucked my cock and wanted to go a little further, because she herself took the initiative and went on top of me sitting with this huge ass of yours and that I ended up discovering that it is very greedy too...