Strip Blackjack with Hottie Stepsister

You and your smoking hot stepsister are both grounded for some stupid stuff. So you are supposed to study but she has other ideas, like play strip blackjack! Its fine as you are just stepsister and stepbrother. Whoever loses all clothes first is going to be the loser. You lose and try to hide your cock that is getting hard from watching your perfect tits stepsister take off her clothes too. What else can you do now that both of you are practically naked?