Lucyy tells me that she wants to try some kissing practice and even though I'm her step-Sister, I tell her that is probably a good idea since I'm way more experienced than she is. You walk in on us and we tell you to leave but it's too late... you already have a hard on!?! Ewww.... but you're our step-Brother??? Hmm, well Lucyy did say that she needed to practice. Maybe it would help to practice sex too and see what a real cock feels like? You can keep a secret.. right step-Brother??