Taboo Photoshoot with Stepmom

Description: My stepson has a job photographing models for an adult website. for my birthday he wants me to be a model and do erotic poses to be posted on his website. i start to do poses like a centerfold model would do, showing off my body and butt and slowly taking off my clothes and showing off my thong. as the photoshoot goes on, i end up completely naked and the poses get more and more outrageous and dirty. i begin to be aroused and start touching my pussy and finally masturbating in close-up for the camera. then he suggests i do some shots holding a dildo. after a minute i say it would be more authentic if i pose holding his penis. he takes it out and i begin to stroke it, until he cums in my face, for a final cum-drenched pose.