With a long lick, slowly down and then back up I opened her lips again. I put a hand flat on her mound and the other I dragged a finger from her clit,...back between her lips to her vagina. I could hear her moaning now, getting louder.I slid a finger into her, “Oh.”Pulling that out and then pushing two in, “Yes!”I pushed onto her mound as I pushed my fingers deep, before curling them and drawing them down the front of her vagina. I started a steady stroking inside her, feeling the roughness of. I was pretty sure her mother wouldn't approve of us doing this. But, Astrid wanted to show me this thing she'd learned to do. And I was really curious about both it and her body. We've been buds since we were little, more like sisters than friends. We shared everything. Now she was excited to share this thing she'd been doing to herself every night.I watched with breathless fascination as her fingers probed the ridges of her private parts through her panties. Then she hooked the waist of her. He kissed each nipple and I know how much this turns her on. She whispered to him that she was married and Mike told her he didn't care and pulled her bikini bottom off pretty forcefully. I had a great view and could see how drenched her pussy was and it was very swollen. Mike then pulled out his cock and man it had to have been ten inches long. She gasped when she saw it and he told her to suck it. She quickly got down on her knees and sucked it like she never would see a dick again. I. "What do you mean 'succubus'? Beth and I came back here and found you passed out on the floor with your 'little willie' at half mast. Then, we then put you to bed." Are you sure she's not a succubus?"Beth and I both laughed before I continued. "She's a fellow Comp-Sci/Engineering major. She heard I was taking the 404 Course and asked me if I thought she should add it." Actually, I've seen you around and heard about your work. I was just looking for an excuse to talk to you," she grinned."Not.