When my wife's sister drops by unexpectedly, I can't help but notice her hungry eyes. She's always been a bit too curious about me, and today, she's ready to act on it. With my wife out, she makes her move, seductively stripping off her clothes and revealing her perfect, toned body. I try to resist, but her tight, wet pussy and those big, round tits are too much to deny. I bend her over the couch, slapping her ass as I plunge my hard cock deep inside her. She moans loudly, taking every inch as I fuck her senseless, our taboo passion consuming us both.