I hear soft moans coming from the TV. I can't take it anymore. I have to go provide myself some relief. I sneak into my computer room and shut the doo....I go to my favorite porn site and am scrolling until I find a sexy scene of a cheerleader and the football coach fucking in his office. I pull my cock out and start stroking it. I turn the volume down just low enough that only I can hear it.I am about to finally cum and I feel a pair of hands on my shoulders. It was too late. Cum shoots all the. That's when we got up, approached the game, and Lisa interrupted it with her rules. "Steve and I have decided that we were being unfair to you guys just now, and that he would let you all fuck me. But only if you all follow my rules."They did not even move or say a word, all looking to me for confirmation.Lisa continued, "Okay, none of you guys have left yet, so I am at least assuming you are considering it. I don't know if any of you have ever done something like this before, and don't want to. "If you like my cute butt that much, maybe you'd like doing it this way." Her voice was tentative. "A friend of mine said something about this. About how boys really like it, and it feels so good too."I wasn't really sure what she was talking about, so I rose up on my knees and moved behind my sister, waiting to find out. The way she was spread was so sexy. I had my hands all over her cute butt, the cheeks separated by the distance between her knees. I could clearly see the shut eye of her. The guys were still trying to look up my skirt.Did you let them?Sure did, but they don’t realize that I knew they could see.Did you leave your panties at home?Sure did. You should have seen the frowns on their faces as they tried to see if they were actually seeing my pussy or if I were wearing black panties.Don’t they know that you are a blonde?They don’t know whether I am a true blonde.How did it make you feel?It made my pussy tingle.Did it tingle more than when Darren and your dad were.