Stepmother with big milkings spread her legs in front of her stepson

Im an average American college student, but I surf the internet and watch youtubers who help with advice on preparing for exams. So I, by mistake, drank my fathers Viagra, confusing it with glycine, and I started having such a wild hard-on that it’s just a problem, and I should be at the college exam in an hour. I had to ask my stepmother for help and, burning with shame, talk about the problem. But, my stepmother is not timid, she immediately took off her panties and said - insert, stop, the potency go away!