..i thot as u hurried frwrd n v both carried hr inside d lab "quick"nc whisprd"in the dark room" she saidv quickly went inside n usng the keys v lockd...ourslvs in complete darknessi laid sn on d cold ground as v yet again sat silently...waitingfootsteps outside announcd d arrival of sum1 as he checkd round labthen sound of the door shutting...click of the door bein lockd "fewh" u said..."cummon lets go" dnt move" i said in2 d darkness..." vl stay here fr nothr half hour n thn go" so i dnt thnk v. Without a word she promptly sat up and pulled her T-shirt off, tossing it to the floor. There she was in all her naked glory. That hard-on I mentioned, was instantly a RAGING boner that ached and throbbed painfully, as I stared open-mouthed at my incredibly gorgeous older sister.It was then that the true physical beauty of my wonderful Susan came into full realization. Her active lifestyle and careful eating habits well complimented her already impressive genetic blessings. Her mouth-watering. Then she would let go of my legs and tell me to get on all fours with my ass up in the air, she started massaging my asshole, when she would have all four fingers in my ass, and she would make me beg her to put her thumb in my ass to.My cock would usually cum before she would get her thumb in my ass, she wouldn’t even have to touch it. I would just blow a wad of cum out of my cock from the pleasure I was getting from her fucking my ass. My cock would stay hard and she would continue to work her. He then signaled me to stand in front of her, which by this point, my pants was making it hard for my dick to breath. She glanced up at me and started to unbutton my pants. My heart was pounding really fast. I couldn't believe the fact that I was going to get a blowjob from my best friend's girl. As quick as this thought shot through my head, my dick was already in her mouth. The feeling of her mouth around my dick was so great. So warm, wet, and soft. She started going slow progressing getting.