My sis had gone over to see her friend lisa across the road leaving me at home. so i grabbed one of my dads porn videos and put it on, being only in ...irst year at high school i hadn't had much experience so porn was my only outlet for frustrations. my sis lauren is two years older than me.Watching the porn for bout twenty minutes i was getting very excited, sitting stroking my hardon through my jogging bottoms, i had just pulled my bottoms down and was slow wanking through my briefs the front. I hurried and put everything back the way it was, and laid back down trying to fake sleep, I could tell she was standing over me. Granny didn’t say a word just felt my head and went down stairs. I fell back asleep before I knew it, when I woke up I put my clothes back on and was on my way back down to the living room, when I heard my Granny in her bed room calling my name. I stopped dead in my tracks thinking that she knew I was in there fooling around. “Yes”, I said “Can you bring me glass of. When the dildo hit the back of my throat, I swallowed, allowing it to enter my throat. The sensation was different from the thinner fake cock and I felt my throat stretch to accomodate it. "You like to suck cock, don't you, Jackie?", she asked. I couldn't answer, but I nodded the best I could. She smiled and on the next thrust, she pushed it further down my throat. "You're a good cocksucker, let's see if you can take it all." After a couple of more thrusts, I felt it's latex balls against my. They both grinned at each other and were only too happy to comply.“What’s going on here?” Liza asked.“You need to have an orgasm,” I said matter-of-factly. “And I’m going to make you cum.”Liza sighed, “Look, it’s okay. Everything Casey did felt great. I had enjoyed it a lot.”I looked at her seductively and said, “That’s great. But now I’m going to blow your mind.”She didn’t argue, so I said, “Hold her legs tightly, gentlemen. She’ll be bucking and writhing soon, and I don’t want her trying to.