Spiteful Stepbro

Your step-sister is dressed up in the shortest skirt you've ever seen and a skimpy little top. She's about to go out looking like a naughty slut and you tease her, telling her you're going to tell her dad and she'd be in so much trouble! But she's seen the way you perv on her, even now, you have a hard one in your pants over her slutty outfit. If she lets you touch yourself and shows you more, you'll stop being so spiteful and you will keep your mouth shut!