Fucking my stepmom hard with dad right next door

My stepmom has always had a hot, curvy body. One day, I caught her in a sexy black bra and thong, bending over to pick something up. Her big, round ass was on full display, and I couldn't resist. I snuck up behind her, grabbing her hips and pressing my hard cock against her. She moaned, pushing her ass back against me. I flipped up her skirt, pulled down her thong, and slid my cock into her wet pussy. She gasped, turning to look at me with lust in her eyes. I fucked her hard, her tits bouncing with each thrust. We were both moaning loudly, not caring if my dad heard us next door. She came hard, her pussy clamping down on my cock. I pulled out, cumming all over her ass. She smiled, wiping my cum off her ass and licking her fingers.