Fucking My sisters Boyfriend Whole

My sister always goes on about what a fat cock her BF has, and I can hear them at it night after night. So when I come home from work to find him alone in the lounge waiting for her to get home, I make my move, I slip on my sexiest lingerie and ask him if he wants some company while he waits, I sit down and catch him staring at my stockings straight away. All I can think about is that fat cock STRETCHING my tight wet cunt. Going for it I slowly peel off my dress revealing my stockings, suspenders, corset & I crawl on the floor over to him. Let just say he fucks me in every position all over the lounge for a good 20 minutes.. finishing all over my tits, just before my sister walks in the door!