I fucked my sister at the bus stop

So there I was with my little sister, Alina, waiting for the Bus to go to school. She looked hot as fuck in her little school outfit. I started to get horny the longer we waited. My best friend Tommy hadn't shown up yet so I decided to try and get a quickie in before he arrived. At first My sister was reluctant to fuck me in the open public. But once I started rubbing on her little beaver she got wet as fuck. She begged me to shove my cock inside her. I bent her over the bench and fucked her from behind. It felt so freaking good. It only took me a couple of minutes to cum and I shot my load deep inside her wet pussy. Just in time to because Tommy and the boys showed up 10 seconds later.