We have all the same friends and I invited them all over for a board game day. They were due to arrive any minute when my room-mate comes up to me and tells me he has a raging boner and can't get rid of it! Apparently he tried out an herbal boner pill he got from the corner store and thinking it wouldn't work, he took it! He tried masturbating but he didn't have enough time to keep trying to cum before our friends got here. He says sex was the only way he would be able to cum and therefore, get rid of his boner. I offered to help and claimed it wouldn't be awkward if we didn't let it. He was SO hard and it felt really good when he fucked my pussy unprotected. I got so into it that I let him cum inside me, claiming that I will just get a plan-b afterwards!