Stepbrother seeking assistance from stepsister in matters of sexual pleasure

My stepbrother has a bit of a problem. He's been struggling with his sizeable cock for quite some time now, and he's been seeking assistance from my stepsister to help him out. I'm not exactly thrilled about the situation, but I can't deny that it's a bit amusing to watch. The stepsister, being a bit of a wild child herself, is more than willing to help him out. She's been giving him some serious oral action, taking his monster cock deep into her throat. It's quite the sight to behold, especially for someone as inexperienced as me. But I suppose that's part of the fun. Watching them go at it, their bodies intertwined in a frenzy of pleasure. The stepsister is quite the performer, handling his big cock like a pro. And when she's had enough, she lets him fill her up with his sticky load, a sight that leaves me both disgusted and aroused.