In a surprising turn of events, my stepmom decided to take charge and dominate my boyfriend. She's not your typical middle-aged woman; she's a sex enthusiast who knows how to handle a big cock. Watching her in action is a sight to behold. She's fat, but her curves are in all the right places, especially her big ass that she loves to show off. My boyfriend, a fan of asses, couldn't resist her. She took his cock in her mouth, giving him a blowjob that left him breathless. The sight of her fat body on top of him, her ass bouncing as she rode him, was a sight I'd never forget. She's not just my stepmom, but a friend who knows my fetish for big asses and fat women. Seeing her dominate my boyfriend was a dream come true.