It was early. Far too early for me to be up but, here I was lying awake in bed. I had woken up during a rather intense dream and just didn't feel much like going back to sleep. Instead I started recalling the events of the previous day. I closed my eyes and watched again as that fateful cup of soda splashed all over my sisters chest. I noticed how quickly her nipples got hard once the cold drink engulfed them in its sticky embrace. The fabric of her blue shirt pushed out by the hard sexy nipples trying to make their way to freedom. Reliving the experience of slowly and playfully stripping the clothes off my sister I watch her face as she tries to discreetly steal glances at the tent in my pants.
My tongue flicks over my lips involuntarily as I recall the taste of her sweet soda coated nipple. The feel of it in my mouth is amazing. Suddenly my thoughts jump ahead to later on that day. I am back on the sofa with Karen's face glued to the TV and her hand stroking my dick. I watch eagerly as she finally turns from the TV and puts her face right in the path of my cum as I shoot stream after stream onto her smiling face and her perfect tits.
"Ahhhh" I let out a contented sigh as my recollection of the days events comes to an end. It's too bad Mom and Dad came home before we could do anything more I thought to myself. Right after I had cum we had heard the car pull up and Karen quickly ran off to take a shower while I pulled my clothes back on as fast as I could. The rest of the night had been fairly normal. The only thing new was the way Karen and I looked at each other across the dinner table. We both knew we wanted more but, we also knew we would have to wait. So we had both turned in early for the night. Probably hoping that sleep would bring the following day faster so that we might have more fun together. Although I had to admit it was going to be difficult to do anything more with her today. Especially since everything was already packed up and loaded in the car ready to go. Dad is going to want to leave as soon as breakfast is over so that we can make it to our first stop sooner.
Sure enough things went exactly as I predicted. We all got up absurdly early, ate breakfast, and then headed out to start our journey. Walking out to the drive way I watched both my sisters walking arm in arm in front of me and I couldn't help but admire how beautiful they were. We made it to the car far to quickly and I reluctantly tore my eyes away from the swaying asses in front of me. What I saw when I looked at the car though made me burst into a huge smile. Dad had loaded all of our luggage into the middle seat of the big SUV. Which meant that all three of us kids would have to sit in the back seat and, the luggage was piled so high that we would be almost completely invisible to our parents up front..
I couldn't help but think that the odds of having more fun in the car with Karen had just shot up astronomically! Of course Sarah would still be back there but she would probably sleep at some point and we could always cover up with a blanket if we needed to.
"Honey, I honestly don't know why you packed it this way. We won't be able to see the kids at all." Mom was saying as she looked disapprovingly at her husband.
"I've told you already." He answered back "It helps us get better fuel economy"
My mother's frown deepened as she and my Dad climbed into the front seats still arguing the finer points of loading a car. This left me, Karen, and Sarah to pile into the backseat. Karen climbed in first and, I followed close behind feigning a slip so that I had an excuse to give her ass a quick grab. Once we finally got in our seats she gave me a playfully amused look until Sarah hopped in after me and pulled the door shut. Looking up at the front I couldn't even see my parents over the stack of suitcases and duffel bags piled in the seat in front of us. Looking back I saw that a pile of pillows and several blankets had been thrown in the rear of the vehicle in case anyone got tired. Although I was already thinking up much more naughty uses for them.
"Everybody ready?" Dad called back cheerfully
"Yeah lets get going" I called back eager to get started myself.
As the car started to move I leaned back into my seat and stretched my legs out amazed at how much room the back seat provided even with three people seated there. It wasn't long before Sarah informed us that she was still tired and wanted to lay down. I pulled a pillow out of the back for her. Putting her pillow against the window she spun sideways to face me and slid down the seat. As she slid down the seat her shirt was getting stuck on the leather causing it to slowly slide up farther and farther from the yellow skin tight boy shorts she had squeezed herself into for the trip . The closer she slid to me the further up her shirt went and, since she already had her eyes closed I was free to stare unrestrained as inch after inch of her beautiful skin was revealed to my hungry eyes. She let her ass bump into me before she stopped leaving her entire mid section exposed all the way up to where her shirt bunched up at the bottom of her breasts. She positioned her legs across me so that one leg was on either side of my massive hard on and her feet were almost in Karen's lap. Luckily she hadn't put a leg down on my throbbing cock which was straining uncomfortably at the fabric of the pajama pants I was wearing.
A dark stain of precum was already visible where the tip of my cock pressed firmly against my pants a mere inch or two from the bare sexy leg of my little baby sister. I was trying to decide how best to reposition to avoid any problems when a light touch on my shoulder reminded me that Karen was still sitting right there next to me. I found myself wondering if she had been watching Sarah's inadvertent strip tease too. I turned to face her and was met with something unexpected. A kiss but, not a quick playful little peck a very forceful and very passionate kiss. Her lips pressed against my own and her tongue quickly forced my lips apart leaving me momentarily stunned as her hand found mine and quickly pressed it against the luscious mound of her breast. She patiently squeezed my hand in hers helping me cop the first few feels of her magnificent tit.