I have been using glory holes for quite some time now. When my wife Sue is away on one of her business trips, I love nothing better than putting on some sexy panties and heading to a private bookstore for some fun.

One particular Friday evening I was visiting my local, private bookstore for some cock-sucking fun.

“Hello, what are you doing going in there?” a familiar voice from behind me said.

I turned around to see my sister-in-law, Julie, standing there.

“I thought only dirty old men and perverts went in there,” she added.

I was quite embarrassed to be caught by her, knowing that she knew what went on there. She suggested that we go and get a coffee at the cafe over the road and talk about it.

She told me that as she was between husbands, she was very frustrated and wanted to go in the bookstore and purchase a porn video but never dared.

I explained to her what went on there in the booths at the back of the store. She said that she was shocked, but I could sense that she was a little excited.

“Do you suck cocks?” she asked.

“Yes, and I've bent over and taken a few as well,” I answered.

“You mean as well as sucking cocks, you have been fucked up the ass?” she asked.

“Yes,” I replied.

“Oh! My god, that is so hot. Does Sue know?”

“No, and I hope you can keep it a secret for me,” I pleaded with her.

“I will on one condition,” she answered.

“What's that?” I asked her.

“You let me come in there with you,” she said, grinning.

“Are you serious?” I asked.

"Yes, I'm so fucking horny, I could do with some cocks to play with instead of just fingering myself to get an orgasm."

“Okay, finish your coffee and let's go; it will be busy at the moment, so you should get some satisfaction,” I told her.

I could tell that she was excited as we crossed the road and entered the bookstore. She grinned as she looked around at all the books and DVDs on display. She immediately started browsing the shelves, reading the titles.

“Hello, I see that you've brought a playmate in with you today,” said John, the old guy who runs the store.

“Yes, she's a bookstore virgin,” I told him, laughing.

“Old John there has got a large cock; I've sucked it many times,” I whispered in Julie's ear.

“Wow,” Julie replied, excitedly.

“Number seven is free currently,” John said quietly, dangling a key in his hand.

I took the key and grabbed Julie's arm and led her through the curtain at the back of the store. We stopped to look at all the sex toys that were displayed in a big cabinet.

“Wow, look at the size of that,” Julie said, looking at a huge plastic cock on display.

“Ha! Ha! I'll buy you that if you like,” I said, giggling.

“I would love a cock that size fucking my pussy,” she replied.

I unlocked booth seven and ushered Julie in. As number seven was not at the end, there were two glory holes, one at each side. There was one chair, a video machine on a large shelf, and hooks to hang your clothes. I put money in the slot and asked Julie to pick the type of porn that she wanted to watch, from the menu that appeared.

Julie picked a MILF video. The film started with an older lady being groped by two young black guys. The three of them were naked, and Julie stared at the size of the young guys' cocks. The lady bent over a table, and one of the guys entered her from behind while she took the other one in her mouth.

“Fuck hell, that's horny,” Julie exclaimed.

I suggested that we both strip to our underwear; Julie agreed. She removed her shorts and top and stood there just wearing a pink thong. I removed my jeans and shirt. I stood there wearing just a pair of black lace knickers.

“Crikey, you look sexy in those,” Julie said, looking down at my knickers.

At that point, our first cock appeared through the hole on the left. It was quite long and thin.

I dropped to my knees and grabbed it with one hand. I licked the pre-cum from its head before taking it in my mouth. I sucked on it for a few minutes before getting up and beckoning Julie to take over.

Julie was soon on her knees, taking the cock in her mouth. I removed my knickers and sat on the chair stroking my cock as I watched Julie's head bobbing backwards and forwards.

Another cock appeared through the other hole. I immediately got down and put my cock-sucking skills to good use. This one was quite thick; I could hear its owner groaning as I sucked on it. He lasted only a few minutes before I took my first load down my throat.

Julie also swallowed her first load, and the guy thanked her as she finished swallowing it.

Julie was delighted and wanted more. She asked me if I wanted her to suck my cock as it was standing to attention. I told her later. She said that her pussy was soaking wet, so I suggested that if she bent at the waist to suck the cock that had just come through one of the holes, I would fuck her from behind.

“Fuck, yes please,” Julie squealed with delight.

She removed her thong and bent at the waist, taking her second cock in her mouth. I positioned myself behind her and guided my cock into her soaking wet hole. I held her hips as my cock slid all the way into her sticky hole. Her head was bobbing backwards and forwards quite fast, as she sucked the cock.

I fucked her using long strokes, pulling my cock almost all the way out before slamming it back in again. I put a hand underneath her and rubbed her clit as I fucked her. Julie had both her hands on the wall as she sucked a cock while being fucked by my cock.

After just a few minutes I could no longer hold it; I gripped her hips tightly, rammed my cock in balls deep, and fired my load inside her. At that point, the cock that she was sucking released its load down her throat.

I withdrew my cock, and Julie let go of the one that was in her mouth. Standing up, she was a bit unsteady on her feet. Cum was dripping down her chin, and running down her legs. I got some tissues from my bag, and handed them to her to clean herself up, and told her to sit for a while.

Another cock soon appeared through the hole on the left. I immediately sank to my knees and took it in my mouth. As I sucked on it, another cock appeared through the other hole.

I left off sucking and gripped it in my hand while reaching out and taking the other one in hand.

Julie couldn't believe what she was seeing. Her lovely brother-in-law was on his knees wanking off two cocks at the same time. I took to sucking each one alternately until I took both loads down my throat.

Julie was well rested and wanted another go. We didn't have to wait long. A thick, hairy cock soon appeared.

“It's my turn now,” Julie said, bending at the waist and taking the cock in her mouth. I must admit that she was pretty good at sucking cock. As she put her sucking skills to good use, another cock appeared through the other hole. This one was long and thick, and I knew who owned it.

I tapped Julie on the ass and gestured to her to back herself onto this big one. She didn't need to be told twice. She stretched herself, keeping sucking while she backed herself onto the big cock.

What a sight, Julie sucking one cock while sliding backwards and forwards fucking another one. The one she was sucking soon emptied its balls down her throat. I stood up and let her suck my cock while she was riding the other one.

That one soon shot its load and withdrew from the hole, with its owner shouting, “Thank you.”

So, there we were, Julie finally getting to suck my cock, and me shooting my load down her throat. We both decided that was enough cock for one day. After cleaning ourselves up, we both dressed, left the booth, and returned to the front of the store.

“Did the pair of you have a good time?” John asked as we browsed the DVDs. We took a DVD that Julie had selected to the counter.

“You can have that one for free,” he told Julie.

“Why?” she inquired.

“It was my cock that you rode. I looked through the hole and saw this gorgeous pussy, so I was very soon hard. I stuck my cock through the hole and prayed that you would fuck it, which is precisely what you did,” he told her.

“Well, I thoroughly enjoyed your cock, and I would like your number so we can fuck occasionally at my house,” Julie answered.

“Definitely,” John replied as he wrote down his phone number and handed it to her.

“Okay, see you in the week,” I said to John as I pulled Julie's arm towards the door.

“I hope you both come together,” he shouted as we left the store.

Julie and I crossed the road to the cafe to discuss what we had been doing while having a coffee.

“I've had more cock today than I have had in the past three years, and I didn't realise that you are such a slut,” Julie said with a big smile on her face.

“I'm glad you enjoyed it,” I replied.

“I did, but I'm still horny. Let's go to yours and fuck properly,” Julie said, taking me by surprise.

“That would be nice; I'm horny too from seeing you riding John's big cock. That has got me wanting to get inside your gorgeous pussy,” I answered as we got up to leave.

Once back at my house, we just got inside the door and ripped each other's clothes off in the hallway.

“I've always secretly wanted to suck and fuck you,” Julie said, sinking to her knees, and taking my rock-hard cock in her hands.

I looked down and watched her head bobbing up and down as she sucked my hard cock. At the same time, she gently squeezed my balls, something that I really like.

She withdrew her mouth from my cock after a few minutes of sucking.

“Now take me upstairs, and fuck me,” she demanded as she got to her feet.

I led her upstairs to our main bedroom; Julie was straight on her back on the bed with her legs stretched wide open. I knelt between them and steered my cock into her sticky pussy. I pounded her hole for all I was worth but stopped short of unloading my balls.

“Now you slut, get on your hands and knees; I'm going to fuck your ass,” I said, pulling out of her sticky hole.

“Yes please,” Julie cooed as she did exactly as she was told.

We could both see ourselves in the large mirror hanging on the wall. I rubbed the tip of my cock around Julie's ass before steering in.

Julie pushed back, meeting my thrusts as I fucked her tight ass.

Julie let out a yell every time I thrust my cock in hard. Then I felt the rumble in my balls. I let out a loud groan, gripped her hips tightly, and filled her ass with cum.

We both collapsed on the bed together. Julie turned and cuddled me; we were both drained. We lay like that for ages.

“What a fantastic day we have had today. I've learned that my brother-in-law is a cock-sucking slut who knows how to fuck a woman and satisfy her,” Julie said, turning her head toward me.

“And I've learned that my sister-in-law is a dirty whore who has discovered the private bookstore scene,” I answered her.

We both laughed and agreed that there was more of that to come from both of us!