When my husband goes to work, my stepson comes to my bed. It's always been like this. But this time, I found my stepson with his penis out of his underwear! And he dared to tell me that it gets hard because of me. I told him he couldn't come to my bedroom anymore; I don't want any trouble. I was laughing at the situation. How could my stepson think I could satisfy myself with his little penis? I like big ones, like his stepfather's. I don't know why, but the situation excited me, and I started masturbating, imagining that in a short time, my stepson's penis would become a big one. And it occurred to me that, since his stepfather doesn't fuck me anymore, I can teach my stepson how to do it. Yes, I'll train my stepson so that when his penis becomes a big one, I'll be the one enjoying it. Every effort has its reward!