Stepson 19 years! Totally brazenly used!

My new guy has a 19 year old stepson who lived with us. Anyway, I came home today and he is calling me.  I went into the living room and he said if I could help him with something. I should have a look at his cock because he thinks something is wrong. I put on some latex gloves, I don't know what he has. When I looked at his cock, I saw nothing except that he was hard afterwards. I told him there was nothing and he said that he only said that as an excuse and maybe make me horny when I have his hard young cock in hand. he had a little cheeky little boy I thought to myself and I could not resist and have to fuck the brazen guy. how did he know that i can't resist young cock