I use the i word throughout this, taboo trigger words
At the store trying clothes on, stepson walks in as I get dressed seeing my tits. I notice he’s turned on and I remind him how fucked up that is, but I couldn’t let my stepson walk out with a boner - I offer to help him. Only with a handjob though… after all I am your stepmom, it will be wrong to let you go inside me. I get turned on and I cave in, I couldn’t resist the temptation and I fuck him, I tell him to not cum inside me. But I want his seed inside me and to impregnate me, now that’s really fucked up huh?
