Should I try and put my cock in her mouth? The thrill of the last night was upon me and I turned Donna on her side and brought my groin up so it was even with her mouth. I held my cock in my hand and brought the head forward until it grazed her lips. They felt so smooth and soft as the head of my cock rubbed against them. Pre-cum leaked from my cock and I coated her lips with the white fluid. I put my other hand behind her hand and held her steady as I let her jaw sag open. With extreme care and caution, I moved my hips forward and the purple head of my cock slid between my sister's full lips. I paused with just the head in her warm mouth and looked at her face. The site of my gorgeous young sister, her lips parted and the blue-veined shaft of my cock emerging from between her lips almost caused me to blow my load right then. I held the shaft of my cock with one hand and slowly moved my hips forward letting another inch of my cock enter my sleeping sister's wet mouth. And then it happened. She began to suckle and nurse at the end of my cock. I strangled a cry as her mouth and lips sucked on the end of my cock. The feeling was incredibly intense and I began to buck my hips in time to her sucking. Holding her head steady, I pushed another inch of my hot cock into her mouth as her velvety lips slid over the throbbing shaft. I could feel her exhaling through her nostrils on the shaft of my dick. I began to gently move back and forth fucking my sister's mouth as I felt my orgasm start. My balls were boiling and I thought that the prudent thing to do was to pull out and cum on her face. But the male instinct when you are coming is to push forward and instinct won out. Involuntarily, my hips rocked forward and another inch of my cock entered Donna's mouth. The world exploded behind my eyeballs, as my cock spurted its hot load of semen into my sister's mouth. I saw twin streams of cum leaking from the corners of her mouth as I continued thrusting my cock into her mouth. Again and again my cock pulsed as cum shot from the tip of penis into Donna's mouth. I saw and felt her swallow as I pushed even more of my cock into her mouth as the final load of hot cum shot from my dick. She swallowed a few more times as cum dripped from the corners of her mouth. My cock twitched a couple of times as the last of my orgasm flowed into her mouth. I lay like that for a few minutes with my semi-hard cock in my sister's warm mouth. Finally I moved backwards and my penis slipped from between her lips and a large gob of cum drooled down her chin and onto her chest.
