I grew up in a deeply religious house. Every moment of my life was monitored; as such when I went off to college I was still a virgin. My dominant fantasy was losing my virginity but I never expected it to happen the way it did.

I had been at college for a few months and had just celebrated my eighteenth birthday. I had just finished working out and when I entered the changing room I heard some strange sounds. It sounded like two bodies slapping together and there was a lot of grunting and cheering. I walked around the lockers and saw a group of guys surrounding a table. As I got closer I could see that there was a woman with a towel on her face getting fucked. I got hard instantly. I had never seen a naked woman before and her body was stunning.

A couple of guys noticed that I had approached, I heard Tom say, “He's next." To me, he said, "Remove your clothes and get your dick ready.”

In stunned silence, I nodded and removed my clothes. I watched as the guy before me slid in and out of the most amazing pussy I had ever seen. Since this was long before the internet, I had purchased a lot of porno magazines. I don’t know if it was because this one was live in front of me or if it was actually nicer than the ones I had previously seen in the magazines.

The guy that was fucking the woman I was going to lose my virginity to started to speed up and pulled his dick out sending a stream of cum all over the woman. The guys cheered and someone wiped the cum off her. When the guy moved out from between her legs I stepped in. I saw a bead of pre-cum on my dick and moved in closer. I spread her pussy with one hand and guided myself into her with the other.

Her pussy was so hot and so wet. It felt absolutely amazing. She pulled her legs up and held onto them near her knees, this gave me an even better view of her pussy. I could tell that I was going to cum quickly. I didn’t care, I was finally fucking my first pussy.

I looked around the room and asked, “Do I cum in her or do I have to pull out?”

When I asked the question, the woman’s pussy gripped me. It shocked me that women could do that.

Tom responded, “Do what you like.”

"I am going to cum in her," I said as I started grunting. I felt the first jet of cum shoot from my cock, at the same time Tom pulled the towel off the woman’s face. The recognition was instant and terrifying. I immediately pulled out as the rest of my cum landed on my sister’s pussy.

“Barry! What the fuck are you doing here?” Tori asked.

“I saw an opportunity and took it. I had no idea that you were under the towel.” I answered back.

I saw her look at the guys around her. It looked like she was pleading with them. She turned to Tom and asked, “He doesn’t have to, does he?”

Tom nodded, “He may not know the rules, but you do.”

I looked at Tom and asked, “What rules?”

He had an evil grin on his face when he said, “You are required to clean up your cum.”

I shrugged and reached for a towel. One of the guys pulled it out of reach. Tom said, “With your tongue.”

“What!” I shrieked. “I just came in and on my sister’s cunt and you expect me to clean it up?”

Tom shrugged and said, “Gangbang rules, the first time you fuck her you have to clean her up and you have to use your tongue.”

“Come on, there has to be an exception, you can’t really expect me to lick my sister’s snatch.” I pleaded.

Some of the guys were starting to lose their patience. A big guy named Brock stepped forward and said in a commanding voice, “Clean her up now! I want to fuck her next.” He then pushed me towards my sister.

At this point I knew I had no choice, I started to get scared of what would happen if I didn’t do what they were telling me. I moved back between my sister’s legs. I started to move close to my sister’s pussy and I could smell our mixed juices. I stuck my tongue out and licked my cum off the top of her mound. I heard the guys cheering as I started to clean her up.

I swallowed every time I had my cum in my mouth. I saw some cum on her inner thigh and cleaned that up next. I looked around and couldn’t see any more cum on her pussy. I went to stand up and I heard, “Not so fast, did you cum in her pussy?”

I nodded, and heard, “Well, spread her pussy and clean it out with your tongue.”

I fell to my knees, utterly defeated, I placed my fingers on her pussy lips and spread her pussy. I could see my cum starting to leak out of her. I moved in and tasted my sister. It was my first time tasting a pussy and it belonged to my sister. I had grown accustomed to how my cum tasted. Tasting her pussy juices mixed with my own cum added a tang. I didn’t show it but I liked the way her pussy tasted.

I stood up intending to walk away. Tom stepped in front of me, "No one leaves the gangbang until we've all had our fill."

“You want me to watch you guys fuck my sister?” I asked.

“Rules are rules, my man.” Tom countered.

I looked back at my sister and saw Brock’s dick slide into my sister’s pussy. She had covered her face again; at least she didn't have to watch me watching her. She started to moan as Brock fucked her. I saw his cock get covered in her cum and what I assume was a bit of my cum. He pumped a few more times and grunted. I saw his cock twitch as he unloaded into my sister. When his cock flopped out of her a trail of cum oozed from her used pussy.

I was glad I didn’t go after him and had his cum in her pussy as well. I watched as the guys took turns fucking her. With her face covered and looking at her naked body my own body betrayed me when I started to get another erection.

Tom stepped up and was about to fuck my sister when he looked at me, “You want to fuck her again, don’t you?”

I just lowered my head. “Go ahead, you’ve already done it once. Doing it again won’t matter.” He said.

At that point I was so fucking turned on I stepped up and started fucking my sister again. I could feel her gripping my cock every time I thrust into her. She started to moan more the harder I fucked her. I realized that she was about to cum. I felt her pussy spasm around my dick as I started to cum. I grabbed her hips and rammed my cock as deep into her as I could. I emptied my balls into my sister.

The guys cheered as my softening dick slid out of my sister’s used fuck hole. Tom pushed me out of the way and slid his dick into my sister. After a couple of thrusts, he started cumming. When he was done cumming he pulled his dick out and looked around at the guys and said, "Let's hit the showers, boys."

I followed the group of guys to the showers and started to get cleaned up. I was surprised when a few minutes later my sister walked into the showers. She walked up to an open showerhead between Tom and Brock and started to clean herself off. She looked around the shower room and saw that one of the guys had gotten hard. I watched as she walked over and got on her knees in front of him. She started blowing him right there in the shower.

Everyone turned to watch as my sister gave the guy a blowjob. For me time stood still, it was so surreal to watch all this sexual activity and to get turned on watching my sister be a total cumslut. The guy grunted and I saw his cock pulse as he came in my sister’s mouth. When he was done she stood up and said, “Thank you, sir.”
I looked down in horror as my cock was hard again. My sister was walking back to her spot beside Tom when Tom pointed at me. My sister turned around and saw that I was the one with a boner. She looked back at Tom, “Do I have to?”

Tom nodded, “You know the rules, if any guy gets an erection in the shower you have to blow him and thank him.”

I felt a shiver run down my spine as my naked sister walked towards me. She got on her knees and grabbed my dick. I looked down to see my sister slowly inserting my dick into her mouth. I can’t lie, it felt amazing. Another first. My first blowjob, but again it was my sister. I tried not to think about that. The world melted away as I started to get close to cumming. I thought I was going to pass out. I grunted when I started to cum. At that point, I didn't care that my sister was sucking my dick. It felt so damn good.

When I was done cumming she must have swallowed and looked up at me and said, “Thank you, sir.”

She then got up and went back to her spot in the shower.

Do you want to read what happened when she showed up at my dorm room later that night?