Family Road Trip

Every year my family decides to go on a big road trip. There is only four of us. Myself, my younger sister, Mum and Dad. This year my parents decided that we would drive up to far north Queensland which for us meant about 18 hours of driving. We would stop in a motel half way and do the trip in two days. We have a big family car its a people mover. it has eight seats, three in the front, two in the middle and a long bench seat right down the back. My parents were up the front my sister sat in the middle row surrounded by magazines and CD's. no ipods back then. I was stretched out on the back seat. I had myself a blanket and my pile of gear to keep me entertained for 18 hours worth of driving. The first four or five hours were pretty uneventful. lots of chatter back and forth about school and friends, a bit of singing a long to the radio until eventually it all started to die down. I think my mum had fallen asleep up front my sister had her head phones in and I was just reading some magazines in the back. Being 16 I was completely obsessed with hot guys and sex. So I was reading Cosmo and flicking through till I got to the sealed section. I peeled it open and started to read all the juicy bits about giving blow jobs and orgasms etc and started to feel a little tingle in my lower region. Once again being 16 and always having sex on the brain I was horny most of the time and I hadn't had a chance to masturbate the night before because I was up late. I pushed the thoughts to the back of my head and read a different section that had nothing to do with sex. Eventually we reached our motel and my parents had booked two rooms with a double in each. My sister and I would have our own room and share a bed. this was nothing new we do this a lot back home. If we were up late talking and just fell asleep it was nothing to way up in the other persons bed in the morning. We were pretty excited we had our own room so we bolted back there after dinner and our parents yelled out "don't stay up too late". Secretly I think they wanted their own room so they could have some crazy out of home sex themselves. We got back to the room and tore open a big bag of lollies and ate them all so we were on this massive sugar high. we here dancing around and singing to songs we knew and then my sister started taking her clothes off. I was like "wow! what are you doing??" and she just said, " who cares we have our own room all night lets just be free" and I thought why not so we both stripped down to nothing and kept dancing. all this dancing naked had me hot and I could feel myself getting horny again and not just normal horny. I could feel my pussy lips swellings and the juices starting to pool in my pussy. I tried to ignore it but the dancing naked girl in front of me and me being naked in a strange room just had me all worked up. Eventually I called it quits and we both crawled into bed still naked, we said goodnight rolled away from each other and within minutes I could hear my sister lightly snoring, she was asleep. I was still so horny though and I brought my hand down to my pussy and ran my fingers up my slit. oh my god I was so wet, I rubbed up and down a few times and started to push on my clit and the first time I touched it I gasped and had to put my face into the pillow. the sudden movement stirred my sister and she rolled over facing towards my back now, I looked over my shoulder saw she was back asleep again. immediately my hand went straight back to my now soaking pussy, it was actually leaking down my legs now and I kept rubbing lightly trying not to make a move when suddenly she moved around again behind me and I realised it was useless there was so way I was going to be able to cum with her less than 50cm away from me. I rolled onto my belly licked my fingers clean and after a few minutes I crashed out too. We both woke up to someone banging on our door and it was our dad saying "hurry up we have to get moving you two slept in". In our rush last night we had forgotten to set an alarm. Dad yelled out again, he said " its too late now for you two to shower so just come and wear your pyjamas in the car its not like anyone will see you" unfortunately we had been sleeping naked and to avoid the added time of getting into clothes we just threw on our pj's and grabbed our bags then bolted out to the car. Once in the car we all settled into our same seats and the drive started, everyone was still pretty tired and very quite so I took up where I left my reading the day before and I got back to the sealed section. immediately before I had even opened the page I felt the moisture come flooding back to my pussy. I pulled the blanket over my lap so that if anything I could be a little more modest. I was sooooo horny and I asked mum how long the drive was today as I was dying to find some alone time once we got to our resort so I could furiously rub my clit till I released all this tension. she said "7 more hours today so not as far as yesterday, but I'm going to get some sleep now, I didn't sleep very well last night" I could almost hear the smirk in her voice as imimure it wasn't sleep my parents had on their brain last night. I yelled out to my sister to swap a CD but she ignored me so I shouted a bit louder and she pulled out a headphone and said "what??" it was then I got a genius idea. I said "nothing, sorry I bothered you" and she put the earphone back in. I was going to do this, I was going to get myself off in the back of the car while my whole family was less than 5m way. the idea itself has my pussy pulsing. I made sure the blanket was fully covering my body and then I shimmied down my PJ bottoms till I had them just hanging around one ankle. I slide my hand down my belly and once it reached my wet lips I let out an involuntary groan again and then suddenly froze to see if anyone had noticed. nope nothing none the wiser. my sisters headphones must be working great. I kept rubbing my lips my fingers going back and forth over my clit and then sometimes slipping down lower so I could thrust a finger or two in me. each time I pushed 2 fingers in I had to bite the blanket so I wouldn't moan out loud. I was getting real close to cumming, by this point the seat was a mess under my hands were soaked and I'm sure my face was flushed. When all of a sudden my dad asks back "you ok back there Susie, it must be hot in the back your face is all flushed??" I managed to croak out a "yep I'm fine" then got straight back into it. no more interruptions this time I need this orgasm more than I needed air right now. I got myself right to the edge and then I plunged two fingers deep into me pushing on my G spot and then I went crashing over, my whole body convulsed under the blanket I was gasping and I had my hand in my mouth, the blanket had slipped down to my belly and by the time I had finished orgasming it was just being held up on my hips. I breathed out pulled it up and waited to see if anyone had noticed. No one. nothing thank god. I shuffled my but a bit and felt how wet the seat was. oh my god I had made such a huge mess, that must have been one massive orgasm. I licked my fingers clean pulled my pants up and then poured my entire water bottle over the back seat and went SHIT! this got everyone's attention. dad asked what had happened and I told him I had spilt my entire water bottle on the back seat. now I will have to sit up in the middle seat. He was none the wiser that the back seat was actually soaked in my teenage pussy juices. The rest of the ride was pretty uneventful after that, the holiday was great and I bet you can guess what I did in the back seat on the way back. I brought a towel with me this time. seemed family road trips were never going to be the same again.