This story is number 5 in this series. Please read the previous volumes, and thanks to everyone for the great feedback.
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When breakfast and coffee were done, Sheryl said she and Becky were going shopping as soon as they had showered. I volunteered to clean up the breakfast things and the two of them vanished upstairs. I puttered around the kitchen, making another pot of coffee, thinking I might just spend the day watching sports or a movie or whatever. "A lazy day, that's just what I need." I thought to myself. I decided to start by playing a game on the computer, and I headed up to my room.
When I walked past the bathroom I heard the shower running, and I also heard voices. Both girls were in the bathroom together. One was showering while the other waited. Or maybe one was already done. I couldn't believe my luck, and, throwing caution to the wind, I quickly retrieved a CD from my room and squatted on the floor outside the bathroom door.
Just as I looked under the door I heard the shower stop. "Rats." I thought, "they're already finished!" However, I peeked anyway. To my great delight Becky had just finished her shower and Sheryl had not yet had one. Sheryl was clearly visible, she was naked and sitting on the toilet, obviously waiting for Becky to finish. The shower door opened and Sheryl stood. Becky and Sheryl were standing naked face to face! I could see them both in profile, and quickly looked up and down their bodies. Then, Sheryl got into the shower and closed the door. Becky started dressing, and the show was over.
I went back to my room. I was fully erect -- just seeing the two women in the same place while they were both naked was amazing. They were obviously comfortable enough with each other to do that. They had shared a bed last night, Bob wondered what they wore while they were sleeping, after all, he knew that Becky usually slept naked. As he pondered the possibilities of this, Becky came into his bedroom.
"Hey, earth to Bob!" she said.
"Oh, uh, what's up?" I asked, finally realizing she was in the room.
"Do you want to come with us to the mall?" She asked me.
"Go shopping with 2 women who have no intention of going quickly? No thanks, I'd rather drive a rusty nail into my own foot." I said.
"Oh fine, you could just say no, you wanker!" she grinned at me, then looked at my lap. I had been so lost in my own world I hadn't considered the fact that I had an erection and was wearing track pants. Becky giggled and said, "You should really take care of that, you know." Her eyes lingered for a few minutes more, and then she left the room.
I was embarrassed, but not nearly as embarrassed as I would have been if Becky and I had not had such open and frank discussions recently. So she noticed I had a hard on, that's not really a big deal, was it? Bob heard the shower stop, and then the door open. He quickly got up and went into the bathroom, closing the door behind him.
"Hey!" squealed Sheryl. "What are you doing? We're going to get caught!"
"Don't worry, my parents are away all day and my sister won't care." I stepped over to her now dry body, pulled her to me, and kissed her. "Besides, I didn't get a chance to thank you for last night. What brought that on, and how did you learn to do that?"
Sheryl smiled at me, seeming suddenly shy. "I wanted to do it for a while, you know, let you cum in my mouth. Did you like that? Is it better than when I jack you at the end?"
"It was nice, different, but I like them both. You should do whichever one you like." I replied truthfully. I really liked getting a blow job and finishing in her mouth, but there was also something nice about watching my cum splash onto her legs, or breasts, or even face.
"Well, I didn't think I'd be able to swallow the whole thing, but I went online and looked up how to deep-throat." She blushed at this.
"Wow, my girlfriend looking up porn online. This is a new turn on!" I said to her. She lightly smacked my arm as though to protest. "Listen," I said to her, "you're going out all day, and before you go, I'm going to eat you, right here in the bathroom. Do you want to lie on the floor or sit on the vanity? I want to get you really hot and wet and try to put one finger inside you, is that okay?"
In reply she pulled me over to the vanity. She sat on the edge and I went down on her. Her pussy was clean, and smelled good. She was a little turned on already, it seemed. Her lips were swelling and there was just a hint of moisture and I pushed my tongue between her folds. She breathed deeply, and put one foot on either of my shoulders. She was flexible, and this opened her up as much as possible.
It did not take long! Soon she was holding her breath and grunting as she pushed her hips toward my face. I took one hand off her thigh where I had been holding her and rubbed her pussy with my index finger. I swirled it around as much as I could, to make it wet and slick. I had no desire to hurt her, but I wanted to penetrate her with my finger.
She obviously realized what I was doing, and she stopped rocking her hips and steadied herself. I kept licking her clit, and she was obviously enjoying herself. As I licked I slowly pushed my finger in. I got about halfway and pulled out a little, seeing if she wanted me to stop. I looked up at her, but she just looked down lustily. I pushed again, and very quickly I was all the way in her. She clearly enjoyed this sensation, as she opened her mouth and panted. I resumed licking, and now I also added little thrusts with my finger. Sheryl obviously liked this. She was grunting with every thrust, meeting my hand with her hips.
It was at this point the bathroom door opened and my sister stepped in. She obviously thought I was still in my room. She stopped dead in her tracks. I pulled my head and hand from Sheryl's pussy, but Sheryl grabbed a handful of hair and pulled me back. She was obviously close to cuming and she did not care if Becky was in the room.
I looked up at Sheryl and said, "but Becky's here!"