Your sister storms into your room as if it's hers. She playfully sits on the edge of your bed in one of the shortest, tightest skirts you've ever seen. She starts asking you how you are and immediately you know she wants something. You tell her to cut to the chase and while she pretends to be offended it doesn't take her long to tell you the real reason she's in your room. You see, Mom took her car..again. She went out a couple weeks ago and came home well past curfew (like usual) now that it's Saturday night none of her friends can give her a ride to this incredible party. That's where you come in. You're slightly annoyed because your sister is bothering you on your day off, not to mention she's sitting with her legs wide open giving you a view of her pretty pink panties. You try to avoid looking down when you firmly tell her that you don't want to leave the house tonight. This sends her into a rage and she leaves your room promising that you haven't heard the last of her. A few minutes later she comes back and stands right in front of the TV. She tells you that if you're not willing to give her a ride just because she'll sweeten the pot and do your chores. First she offers to clean the bathroom, then do your laundry. That's not good enough though so you refuse. Finally she smirks and pulls out the big guns, telling you if you drive her to the party she'll make she your GF finally fucks you. She is one of her closest friends, after all. Too bad your sister doesn't know that you dumped your GF a week ago for that same reason so she's no help there. This catches her off guard but seemingly makes a light bulb go off. Her whole demeanor changes and she shifts to a more flirtatious tone. Fine..if you don't have a GF, what if I let you fuck me in exchange for a ride? You laugh but she's stone faced and serious. Your mood changes and you're suddenly uncomfortable..No? We can't fuck! But she's bent over and taunting you with that big ass of hers. She knows you stare at it, and she knows you noticed her pink thong. Why stop there? You can have her, feel her ass against your balls..Just, give in. And do what she asks in return. Your dick is throbbing even though it's your little sister. You haven't gotten laid in months and she's looking so tight. You take control and bend her over but pause before entering her, she backs her ass up on to you and tells you to stop thinking and just do it. You enter her tight pussy raw and feel her ass slap against you as you hit it. You pound her doggy until you know you can't hold back and she begs you to dump a big load of nut in her. You shouldn't but you can't resist and you start spraying a huge load deep in her. She pulls her panties back over her pussy and tells you it's time to go to the party! She doesn't care if you're leaking out of her while she's there.