Your bratty step-sister, Ruby Sinclaire, can be such a bitch. She always has an attitude for no reason. Well, this time, you've got her right where you want her. You were scrolling online an you came across some naughty videos of Ruby. You've always suspected she was a slut, but now you have proof! You start thinking, maybe you can use this to your advantage. After all, your step-sister, Ruby, is pretty hot. She has huge tits, a fat ass, and she obviously loves to worship cock. Why not use this opportunity to get your own cock sucked? She's only your step-sister. She agrees to blow you, but only if you promise not to tell anyone what you found online. Ruby lays on the couch in the pose, her thick BBW soles scrunched in the air behind her. She takes your cock in her mouth, sucking the head while holding your balls. You grab her fat ass through her booty shorts, spanking her, making sure she knows you're in control. She gives you a passionate blowjob, proving how much she loves sucking cock. Your cock gets so stiff in her wet mouth. She deepthroats your dick, swallowing your cock while rubbing your balls. You grab a hold of her hair and push her head down even further, telling her that's exactly what you needed. You fuck her throat, making her gag on your dick. You use her like the good whore she is, making a mess of her, slapping her face and shoving your dick in her throat until you cum on her fat tits.