As soon as we made it out to the car Amanda had pulled her jeans off and pushed her panties to the side, so much for discretion and privacy. I watched as I fumbled with the keys to start the car as Amanda slipped her fingers down and rubbed her clit, turning to look at her face I saw her eyes locked on mine.
"Like what you see big brother," she asked playfully as she dipped a finger inside that pretty little area between her legs.
"I, well, I didn't quite expect all this Amanda but yes, nothing turns me on more than seeing a girl pleasure herself," I chuckled, "well, then again I would love to see you with another girl and to.."
"Ok, mmm," she giggled and then moaned, "I get the picture Chad, you're horny and a guy enough said."
She leaned over and brought a wet finger to my lips and allowed me to suck her finger into my mouth and taste her as her other hand went to the bulge in my jeans. "Get us home fast Chad, your little sister is wet and in need of that big cock of yours."
I ran a few red lights and stop signs on the way home, luckily there were no police cars out there that night. As we pulled in the driveway we noticed all the lights were off and figured mom and dad were either asleep now or still hadn't gotten back from their trip. Amanda pulled her jeans up just in case and then jumped out of the car and ran inside.
We grabbed a few bottles of water and then a movie from the shelf downstairs and headed up to my room. I checked the answering machine and sure enough our parents were delayed and not coming back for a few more days, mom had said something about running into some old friends and staying a bit longer to visit. I really couldn't even remember that much as I ran up the stairs and into my room.
As I went through the doorway there was Amanda lying beneath my covers with all her clothes in a pile next to the door. She sat up and as the blanket fell away her breasts and hard nipples came into view. I noticed the tv was already on and she had apparently taken it upon herself to put in a movie. As I looked at the screen the title of the movie scrolled up as a naked girl walked through an open doorway, "Brothers do Sisters 2" was the title of the movie.
I smiled and walked to the bed and started to sit down when Amanda reminded me if she wasn't wearing clothes I shouldn't be either. I put the bottles of water down and stripped as she clapped and whistled making me blush. "My, my big brother you have muscled out all over in the right places since joining the military."