Your character is the typical cool aunt, very open minded, young at heart and unfortunately a single step-mother to be. I'm staying over at your house for summer to give you a hand since you're pregnant and I've been around for a few days already. Maybe it's my presence in the house, maybe it's a hormonal imbalance caused by the pregnancy, whatever it is you can't help but feel incredibly horny, to the point that you're considering using me to relieve yourself of this urge. You use your usual flirty approach but seeing how I'm used to you being pretty open and explicit about sex, I don't really catch on that you really want it this time. So you go for an even more aggressive approach and get touchy, but it's then that I reveal that I'm a virgin and know close to nothing about sex outside of the porn I watch. Hearing that you take it upon yourself to guide me through it and better understand the female body, making sure to make me promise that I won't say anything to your step-sister (my step-mother) So we both get naked and you see me stare at your body intensely as I've never seen a naked woman in real life before. This makes you feel sexy and puts you in a dominant mood as you guide me in a tour of every part of your beautiful body. For this part I'd like it to be a sequence of closeup shots, starting from your pussy as you keep it spread open and ending with closeups of your nipples. It's in this part that I'd ike you to do a full explanation of what makes up a pussy, using scientific terms to name each part. Explain how the external part is called a vulva and it's composed of labia majora, labia minora, a clitoris which is covered by a hood and as you part the lips you explain how there's a urethra where you pee out of then there's the vagina, where all of the fun stuff happens! But before all that you go over how to stimulate the pussy, tell me where to touch, where to lick, maybe even mention the perineum and anus. You then bring the attention to your mammary glands or boobs and explain how they're designed to make milk but having your areola and nipples played or sucked is very pleasurable. We then move to actual sex and you tell me to push my penis inside of your vaginal canal. Being nervous I accidentally slip into your ass (no need for actual penetration here, just simulate it "offscreen", maybe try an angle where the lower part of your body is out of shot) you Yelp in surprise and tell me that I'm in the wrong hole and I pushed my cock inside of your rectum. You tell me to pull out and be careful with other girls as I'm lucky that you're used to anal so you're pretty open down there, but an inexperienced girl might get hurt, so prep and cleaning is important. You then guide me by hand into your vagina and we start having sex. You talk about how how the vaginal canal is made up of many folds of velvety flesh which serve the purpose of giving pleasure. You then let yourself go and enjoy the moment as you tell me to cum inside. There's no need to worry about using a condom as you're already pregnant and your uterus is full. But by the end of it you do tell me to be careful with other girls and always use protection.