Say nothing but sis already knows

She begins to back the car out still with her pussy very much spread and visible to you. You choose to stay quiet but you keep peeking over too much for your sister not to notice. She asks, “What’s with the constant peeking, bro? Trying to see under my skirt or something?” You quickly look forward and say, “No..no way! I’m..I’m just making sure you are alright since it seems like that rock might have hurt.” They come to a stop at the red light as she says, “That’s so sweet of you! Such a gentleman you are, bro. It’s alright if you were looking at my pussy too. I mean I’m the one that forgot my panties in my haste to get ready.” You were blushing at this point and knew she had caught you. You were also confused by that last statement because you knew she had panties when she first came in your room. “Didn’t you have panties on already though?” You decide to ask and instantly regret bringing it up.

She giggles and says, “Well, those panties are my sleep panties and they were sweaty. So I was getting dressed and was going to put another pair on but I knew you were waiting for me outside my door so I kinda forgot. I mean I also forgot a bra if you couldn’t tell already.” The cold ac was making her nipples poke thru as she grabbed the sides of them to make them jiggle up and down just a few feet from your face. Your erection was creeping up your leg and you could see the imprint of it trying to poke thru your pants. Your sister noticed you trying to hide your erection and she giggled. She didn’t say anything about having seen it but she blushed to know that her little show had turned you on. It wasn’t long before she was parking at the drop off and she sighed. She smiled and said, “Today was fun, bro. I hope you enjoyed the ride and you have a good day.”

You are a bit sad since it was actually fun hanging out with her for once and you almost didn’t want it to end. You sigh and say, “Yeah…I wish I didn’t have to go to school. Ain’t no way is mom calling in for me to have a day off.” Your sister looked at you and grabbed her phone. She asked, “Do you really not want to go to school and want to hang out with me instead?” You were surprised by the question and where she was going with it but you confidently said, “Yes, without a doubt.” You can’t believe that she even suggested that and quickly she put in a number and sounded almost like your mom, “Hi, my name is Laura Johnson. I was needing to ask for you to excuse my son for the day as he is not feeling well.” You couldn’t believe it! Your sister was pretending to be your mom and just excused you for the day. You heard her finish the call, “Thank you and have a wonderful day.” She hung up the phone and said in her normal voice, “Alright bro. Now that that’s done, where do you wanna go?”