On the weekend of Memorial Day, Jim and I discussed family-related issues, which reminded me of the normal (I guess) and sometimes tense relationship I have with my younger sister Barb, who is two years younger than me.

During the process of growing up, there were always conflicts between us; she was my mother's daughter and followed a strict religious lifestyle. In comparison, this made me a "bad girl", and I was dissatisfied with this.

Barbara's build is more average in many aspects than mine: height, weight, and - something that girls are particularly sensitive about - the size of her breasts. If you've read my comments, you would know that I'm very lucky - my cup size is larger than the average, and my hips are quite full above the thighs. I mentioned all this because I believe that this difference in development is the root cause of her resentment towards me, and it has been like this since we were teenagers. When she gets angry/jealous, she often calls me a slut, while I openly state that I like being with men and like being caressed by men.

Due to all this, we haven't communicated much over the past decade. Five years ago, I attended her wedding but didn't serve as a bridesmaid. It's okay, I understand. Her husband Mark seemed like a nice guy, but from the way he looked at me and the long hug he gave me during the introduction, I felt he was a "bad boy".

About a year later, I suddenly received a call from Barbara, asking if she could come to our house for the weekend. She said she had something to share with me. I was so scared that I almost dropped the phone on the ground, but still told her that Jim was on a business trip and I would be free this week. She planned to drive over the next day and arrive later.

To put it briefly, she had an emotional problem; she thought Mark might have been a little absent-minded. I had a vague feeling in my heart that this might be the cause of the problem, but I pretended to be surprised and expressed my support. After drinking some alcohol, she wanted to share more than I had expected. The topic soon turned to my and Jim's sexual life. It was truly shocking to me; I had never heard her use the word "sex" before!

However, I did notice that her appearance had changed. Her clothes were more fitted and had a more modern style, and - well - she was more sexy. When she moved and acted, I could tell that she had undergone breast augmentation surgery and looked extremely beautiful. When she asked me for my opinion on her "new look", I told her this. When she, out of the blue, lifted her blouse and bra to show off everything, I almost fainted. But she was proud of the final result, and that was completely understandable.

As night fell, our relationship began to take on a new, more harmonious look. We talked about sex and how we pleased each other. She detailed her traditional way of having sex and begged me to share our story. She knew that I might have a strong desire for sex, and I believed she came specifically to listen to her confide.

So I agreed, sharing only about 40% of the things that I actually did with Jim together, because I was afraid that if I told her everything, she would explode with anger.

"Do you guys engage in oral sex with each other?" I asked.

"I know, I almost did it. But to be honest, I really had no idea how to put his penis in my mouth; it was just too big."

I explained to her that she would learn by doing. I told her that Jim's penis was the largest I had ever seen, and that I often gave him oral sex now. Then I asked, "What about sex toys and masturbation?"

"I always thought it was aimed at unmarried women who didn't have a real sex life," she said.

So, I spent 20 minutes discussing this topic with her, telling her that our best sexual experiences often come from masturbation. "Watch as you caress your little hole. He will get very excited. If he doesn't join in, make him do so. Then you'll have full control." I didn't hold back in my tone, wanting to make this conversation about opening up new doors in the bedroom for her seem normal.

From the way she was fidgeting, I could tell that she was very excited. I thought to myself, perhaps there is still hope for her.

"Oh, one more thing: Do you shave there?" I asked.

She told me no, but she would trim it because she didn't want to expose a large chunk of flesh under her underwear or swimsuit. "OK, shave off the pubic hair and you'll be able to amaze him. Give him a surprise. Within a few seconds, he'll lick your entire body with his tongue. And when your private area is exposed, it will be more sensitive."

"OK, you've given me a lot of room to think. Thank you!" she said. "Now, I have to go to sleep."

As she was going upstairs, I was very satisfied with this conversation. I noticed that my undergarments were already soaked through. At this moment, an idea suddenly occurred to me.

A few minutes later, I gently knocked on her door and handed her my second favorite vibrating rod - of course, it had been disinfected. (I was about to use my favorite one in the room!) I asked her if she wanted to try it, and she blushed but still accepted it and thanked me.

About an hour later, my enjoyable vaginal play was interrupted? No, it got worse - there were some rather loud moans and throaty sounds coming from the bedroom. 'Well done, girl, I think!'