What is wrong with this girl? She just prances into your room half-naked, whining about how the air conditioning sucks in her room, and then starts stripping! And then acts like YOU'RE the pervert for getting a boner! You can't help it. You're only human, and Melissa is HOT. It's been in the back of your mind—and in your boxers—for years. Now here she is, wagging her ass in your face and acting like that's normal behavior for a stepsister with her stepbrother—and talking about staying in here every night naked with you! What are you supposed to do?
She finally decides you should jerk off to "get it out of your system"—and that maybe it'll "help" if she jerks off with you too! AND if she makes you suck her dick! AND lets you fuck her! AND then cums a nice creamy cumshot right in front of your face! Will that get it out of your system? Enough that she can be naked in your room all summer without repeating the whole sordid deal again? Guess you'll find out tonight...