Sydney teaches her sister.

While the idea of having Sydney suck my cock right here was appealing the idea of a threesome with both sisters was even more so.

“Sorry Sydney but you’ll just have to get it from the source. I'm teaching Kirsty about sex and she is waiting for us in her room. I need you to teacher her how to perform cunnilingus.”

Sydney gave a mock pout but I could see in her eyes that the prospect of eating her sister out was far more tempting than my cock in her mouth, no matter how tasty it might be.

“O.k.” I said “Take off your bikini, follow me and don’t make a sound unless I tell you to.”

She stripped down and followed me into the room where Kirsty was still lying, her eyes still closed. I saw one of her hands was on her belly, slowly creeping down, but she must have heard me come in because it quickly shot back up to her breast.

“I see you think your pussy is ready for another lesson.” I said.

She bit her lip cutely, looking guilty at having almost disobeyed my request. “Sorry” she said “I didn’t mean to … It just feels so … I just want …”

“That’s O.k.” I said “If you think your ready we’ll start another lesson. I’ve already shown you how to pleasure yourself and I’ve taught you a little about having sex with a man but have you ever thought about having sex with a woman?”

“Maybe” Kirsty said “Sometimes I wonder about what it would be like to kiss one of my friends and I’ve been wondering what it would be like to touch my friends the way you showed me how to touch myself and have them do the same to me.”

“That’s good.” I said “And that’s something you can experiment with, however there is one thing you can only do to another woman, not to yourself.”

“What’s that?”

“It’s called cunnilingus along with a number of other things but it is, essentially, using your tongue and mouth to stimulate the clit and pussy.”

“Really? Isn’t that sort of … gross?” Kirsty said, looking sceptical.

“No more gross than fellatio and, if you are talking about germs, it’s actually less gross than a kiss on the mouth. There are more germs in your mouth than your pussy. Still it can taste a little odd but if you really want to give another girl pleasure it’s one of the best ways.”

“Umm … O.k.” said Kirsty.

I indicated for Sydney to start and she bent down, placed her face between her sisters legs and did so. The moment she did Kirtsy gasped “Oh God! Oh my God! That’s … that’s … wait … Ahhh”

She opened her eyes and saw Sydney’s face between her legs and me standing behind her. “SYDNEY! What are you …? Oh God!”

“Quiet Kirsty!” I said “Sydney knows how to do this better than I do so I have asked her to help me teach you. Now just lie back , close your eyes and concentrate on what Sydney is doing because when she is finished you will need to do the same things to her.”

Kirtsy did as she was told, however she seemed somewhat uncomfortable to begin with until the pleasure of the experience (possibly combined with her programming) turned that discomfort into happiness.

I was really enjoying the show but I was feeling somewhat left out until Sydney’s hand slid between her own legs and began to rub her clit, engorged and wet, along with her pussy by the experience of finally getting to live out one of her most secret fantasies.

I walked up behind her and placed the head of my cock at her opening. In response she opened her legs a little further and used her fingers to push apart her lower lips. Taking that as an invitation I slid my cock deep into her hot wet cunt, making her groan into her sister’s pussy which in turn caused Kirsty to let out a cry of pleasure.

I continued sliding in and out of Sydney’s wet hole, harder and faster, enjoying the sight of Kirsty writhing under Sydney’s ministrations as I did. Again I felt that despite being in a situation where I would have orgasmed long ago normally I could hold out for as long as I wanted to. The question was whether I wanted to cum inside Sydney or wait until I could ‘teach’ Kirsty what it felt like to have a man orgasm inside her. Either way I somehow knew I would never climax again without a woman’s pussy wrapped around my cock.