Your sister and her foreign exchange student friend are hanging out and talking about all the new things she's been trying in the states. Your sister convinces her to try smoking a joint and ,since you were the one who had some, you got invited. They tease you a little for rolling it crooked of course. Your sister is such a brat, but her innocent friend seems really sweet. As they smoke they start getting horny and so do you. They notice the boner in your pants and get a naughty idea, they want you to pull it out and stroke your dick in front of them. They even pull out their beautiful natural tits and start playing with them while they give you jerk off instructions and control how you touch yourself. Watching you stoke, they beg for your cum and count down to the moment they want you to spray a big load for them!